برگزار شده توسط : دانشگاه شهید چمران اهواز
تاریخ برگزاری : 20 مرداد ماه 1400
Abstract The wear of material is one of the tremendous and unavoidable losses in engineering. So, the developments of new wear-resistance materials become an important task in which many researches are interested. The family of zinc–aluminium (ZA) و...
In this short paper, we study mean ergodic shadowing property and obtain some results in relation with other partial shadowing. We show that F s -shadowing property does not imply mean ergodic shadowing, and if a contraction mapping has mean ergodi و...
The aim of this paper is to understand more precisely some relations and interactions between C_c(X) and C(X,Q) و...
A numerical scheme based on RBF-QR method and Chebyshev polynomials is proposed for discretizing nonlinear space-time fractional partial differential equations (PDEs) with variable coefficients. Radial basis functions are used for space discretizatio و...
Frames and their applications are very important, recently. The paper studies a subset of duals of a given frame that have a relation to controlled frames. Some duals of a given frame induce a family of controlled frames corresponding to the primar و...
In this paper, an efficient numerical method for solving nonlinear stochastic Volterra integral equations (SVIEs) of the second kind is proposed. To solve the original SVIEs, the proposed method has the deterministic fourth-order and strong stochast و...
In this paper, some KKM theorems are generalized in hyperconvex metric spaces. Moreover, as an application a Ky Fan type matching theorem and a coincidence theorem are presented. و...
اولین دوره آموزش و تربیت برای هر انسانی به طور رسمی، آموزش ابتدایی است. بعد از آموزش‌هایی که فرد در محیط خانواده فرا می‌گیرد، آموزش‌های رسمی به عنوان آموزش دوره عمومی شروع می‌شود. دانش آموزان از سن 5 سالگی وارد عرصه تعلیم و تربیت رسمی می‌شوند و پس ا و...
The notion of the action of a group (or monoid in a general way) on a set is a fundamental one, perhaps even more so than that of a group (monoid) itself: groups (monoids) derive their interest from their actions. Here, for more studing o و...
سرطان ریه یکی از شایع ترین سرطان ها در جهان است که افراد زیادی از آن رنج می برند. سرعت یک عامل بسیار مهم در تشخیص و بهبود بیماران مبتلا به سرطان ریه است. به طوری که در مرحله اولیه، تشخیص سرطان ریه دشوار است. استفاده از روش های یادگیری ماشین و محاسبا و...
In this article we classify maximal subrings of certain commutative rings. For instance we classify certain maximal subrings of polynomial rings. We also classify all maximal subrings of finite direct product of rings and consequently we classify all و...
Several intersection matrices of $s$-subsets vs. $k$-subsets of a $v$-set are introduced in the literature. We consider these matrices systematically through counting arguments and generating function techniques. A number of identities appear as و...
In this paper we presents a theory of fuzzy uniform space in the style of Weil and we show that every (weil) uniformity$(mathcal U )$ on a set $X$ corresponds a fuzzy uniformity $(mathcal E )$ and we show that to every fuzzy weil uniformity $(mathcal و...
The present paper is conducted to propose a combined finite-difference with spectral methods for the numerical solution of two-dimensional Sobolev equation. The time variable is approximated by finite difference scheme while the spectral method based و...
In this paper, a topology on MV-algebras is constructed which turns the canonical epimorphism into an open map. Then, the conditions under which the canonical epimorphism is closed are studied. Also, some conditions on topological MV-algebras are det و...
The existence of solutions for fourth-order elastic beam equation is discussed. In fact, employing a consequence of the local minimum theorem due to Bonanno and mountain pass theorem the existence results for the problem under algebraic conditions w و...
Let $R$ be a ring and $M$ be an $R$-module. Two modules $A$ and $B$ are called orthogonal, written $Aperp B$, if they do not have non-zero isomorphic submodules. We consider an associated graph $Gamma_ ot (M)$ to $M$ with vertices $mathcal M _ p و...
In this paper, we propose an iterative method based on the shifted Chebyshev polynomials and collocation method for the numerical investigation of the nonlinear two-point boundary value problems of the fractional order. The proposed iterative method و...
In this paper, we try to investigate and solve a bio heat conduction problem related to perfusion coefficient using location and time dependent temperature calculations. To solve this, we first start with a given initial value q0. Having this value i و...
In this papers we investigate the problem of Hyers-Ulam stability of the following Pexiderized Jensen type functional equation $$ 2f(frac x+y 2 )+f(frac x-y 2 )+f(frac y-x 2 )=g(x)+g(y) $$ و...
در بهینه سازی محدب چندهدفه چندین هدف باید همزمان بهینه شوند. معمولاٌ این اهداف در تعارض با هم هستند بنابراین مقصود بهینه سازی چند هدفه بدست آوردن نقاط نامغلوب هست( به جای جوابهای بهینه)؛ و لازم است یک مجموعه نامتناهی از جوابهای نامغلوب را محاسبه کنی و...
In this article, the $alpha$-shortness of $R$-modules in the category of $AB5^*$ were studied. We proved that if $M$ is an $R$-module in $AB5^*$ which has Noetherian dimension and $ N_i $ is a family of submodules of $M$ such that $ dim,frac M و...
ض کنید Gیک گروه متناهی و (k(Gبزرگترین مرتبه ی عضوهای Gباشد. در این مقاله نشان می دهیم که اگر Mیکی از گروه های L5(2) و L5(3)باشد به طوری که |G|=|M| و ) k(G)=k(M) آن گاه GM. و...
Our main goal is to study the connection between the algebraic properties of a module and the graph theoretic properties of the graph associated to it. In this talk after some essential preliminaries of fuzzy sets and intuitionistic fuzzy sets and su و...
In the sequel, the numerical solution of linear fractional integro-differential equations (LFIDEs) are found by Bezier curve method (BCM) and operational matrix. Some numerical examples are stated and utilized to evaluate the good and accurate result و...
با توجه به مهم بودن درس ریاضی در مقطع ابتدایی و اینکه دانش آموزان در این مقطع (کلاس دوم و سوم) بیشتر از لحاظ یادگیری نیاز به یادگیری ملموس و عینی دارند و هر چه آموزش ساده تر و قابل درک تر باشد دانش آموز بهتر یاد می گیرد، جهت رفع مشکل یادگیری ساعت برا و...
The $k$-th signless Laplacian spectral moment ($k$-th $Q$-spectral moment) of a graph $G$ is $T_k(G)=sum^n_ i=1 q^k_i$, where $q_1,q_2,ldots,q_n$ are signless Laplacian eigenvalues of $G$. In this research, we investigate unique graph with the grea و...
this paper, we develop a moving mesh algorithm to solve singularly perturbed turning point problems. These types of problems exhibit an interior layer and therefore require methods that can create sufficient accuracy around the interior layers. The و...
Abstract. We introduce a new kind of generalized inverse which is called π−Hirano inverse. An element a ∈ A has π−Hirano inverse if there exists x ∈ A such that x ∈ Comm(a), x = xax and a − a n+2x ∈ N(A) for some n ∈ N. In this paper, some element و...
Considering all physical, biological, and social systems, fuzzy graph models serve the elemental processes of all-natural and arti_cial structures. As indeterminate information is a necessary real-life problem, which is mostly uncertain, modeling tho و...
In this paper, we prove a new generalization of Darbo’s fixed-point theorem of multi- valued mappings in metric spaces. Then, we present the results of coupled fixed point. As an application of our main results, we prove the existence of the soluti و...
In this work, a nonstandard finite difference (NSFD) scheme is constructed to investigate the numerical behaviours It$ hat o $ stochastic partial differential equations (SPDEs). In continuation, the consistency, stability and convergence analysis of و...
In this article, we have presented a method for obtaining the eigenvalues of the Sturm-Liouville problem using the Mittag-Leffler function. و...
در پژوهش حاضر سعی بر این است که رابطه‌ی نگرش به ریاضی با خودکارآمدی ریاضی دانش‌آموزان متوسطه‌ی دوره‌ی اول شهرستان سیب و سوران بررسی شود. روش پژوهش حاضر توصیفی از نوع همبستگی است. جامعه‌ی آماری شامل کلیه‌ی دانش‌آموزان متوسطه‌ی دوره‌ی اول شهرستان سیب و...
In Poisson sampling, the units are sampled independently with given inclusion probabilities and the sample size n(s) is a random variable so Poisson sampling gives a large variety of the sample size. Also, if there exists a trend in the y which Poiss و...
In this paper, the existence of a fixed point for generalized F-contraction self-mappings in the setting of ordered metric spaces, by using of the $t$-property instead of the completeness, is studied. The difference between the notio و...
In this paper, we study the $g$-frames that are obtained from consecutive combinations of a bounded operator on a Hilbert space. Indeed, we characterize the structure of $g$-frames $ Lambda^n _ n=1 ^ infty $, where $Lambda$ is a bounded opera و...
Abstract. A graph is a mathematical model used to predict the topology of a given system. In chemical graph theory, a graph is designed by considering atoms as vertices and edges as bonds between atoms of a particular molecule. A topological index i و...
Studying expressions of the form $(f(x)D)^p$, where $D= displaystyle frac d dx $ is the derivative operator, goes back to Scherk s Ph.D. thesis in 1823. The special case $f(x)=x^k$ in his work was also discussed by Lang at the end of twentieth و...
The calculus of variations originated from a problem posed by the Swiss mathematician Johann Bernoulli (1667-1748). He required the form of the curve joining two fixed points A and B in a vertical plane such that a body sliding down the curve (under و...
We introduce a new kind of generalized inverse which is called $pi-$Hirano inverse. An element $ain mathcal A $ has $pi-$Hirano inverse if there exists $xin mathcal A $ such that $x in Comm(a)$, $x=xax$ and $a-a^ n+2 xin N(mathcal A )$ for some $nin و...
In this papers we determine some stability results concerning the Cuachy functional equation in non-Archimedean $ell$-fuzzy normed spaces associated to the Jensen functional equation. Furthermore, this results are applied to discuss stability of Pex و...
In this paper, first, the second variational formula of p-bienergy functional with new methods is obtained. Then, stability of p-biharmonic maps between Riemannian manifolds are studied and an example is given. و...
This paper presents an iterative method to solve nonlinear fractional three-point boundary value problems which have important applications in physics and engineering. The proposed method is based on the reproducing kernel operational matrices co و...
This paper extend the theory of Engel groups to pair of groups. Also, we define a pair of polygroups and introduce the equivalence relation $eta_t^*$ on a pair of polygroups such that the set of all equivalence classes is an E و...
In this paper, it will be proved that the Hausdorff Functor preserves homotopy. This can be stated otherwise by introducing the homotopy category and saying that $H$ (Hausdorff functor) induces a functor in this category. و...
Derivative and n−fold integral operators can be extended to upper dimensions. This paper aims to introduce a more general family of distributions generated by upper dimensions operators which called fractional probability distribution. To this end, و...
Let $G$ be a finite group and $x in G$. $Cl_A(x)= alpha(x)|alpha in Aut(G) $ denotes the automorphic class of $x$ in $G$. In this paper some properties of finite groups are described via automorphic class and it is shown that if the number of autom و...
Let Cc(X) be the functionally countable subalgebra of C(X). Cc(X) P is real closed if and only if it is a valuation ring, in this case X is called a CSV -space. For each zero dimensional space X, Cc(X) is a CSV -ring if and only if Cc(υX) is a CS و...
A homomorphism from G ⃗ to H ⃗ is a mapping c from V(G ⃗) to V((H)) ⃗ that preserves the arcs (that is (c(u)c(v) ) ⃗∈A(H ⃗) whenever (uv) ⃗∈A(G ⃗)). The oriented chromatic number of G ⃗ is the minimum order of an oriented graph H ⃗ such that G ⃗ h و...
Abstract. metastasis occurs when cancerous cells move from their original location to other areas of the body. One of the areas where the metastasis is to be made is bone. In this paper we describe the special case of bone metastasis, called osteolys و...
Studies have shown a lot of countries have dual political parties. It is clear that each party is associated with its own ideologies, but there are many people who have positions on economic and social issues that fall into none of the mainstream و...
در این مقاله، فرمول صریح برای گشتاورهای حاصل ضربی متغیرهای تصادفی گاوسی چندمتغیری ، استخراج شده است. فرمول‌هایی که کشف کرده ایم، موجزتر از هر فرمول شناخته شده دیگری هستند و به ما امکان برآورد فوری هر جمله از گشتاورهای حاصل ضربی را می‌دهند. و هم چنین و...
Returns on financial assets are not normally distributed. They exhibit both skewness and kurtosis. There are so many proposals in construction of skewed distributions and it is worth to find an overall class which covers all of these proposals. In t و...
Let $ L$ be a nilpotent Lie algebra with one-dimensional center, and let $ L $ be a reduced direct product of two subalgebras $ I_1 $ and $ I_2.$ In the present talk, at first, we give some necessary conditions for the capability of $ L. و...
In this papers we determine some stability results concerning the Cuachy functional equation in non-Archimedean $ell$-fuzzy normed spaces associated to the Jensen functional equation. Furthermore, this results are applied to discuss stability of و...
In this paper we study the structure of some special bases for the null space of the incidence matrix of a graph. A basis for the null space of the incidence matrix of a graph is called a simple basis, if entries of any vector in this basis is in و...
This note considers the interval matrix equation AXB = F and presents a description of the so-called AE-solution set for this system. The AE-solution sets which introduced for the first time by Shary are a general case of the solution sets that can و...
Problem posing is defined as the generation of new problems or reformulation of a given problem. Contempopdfy educational practice not only place a heavy emphasis on problem-solving but also on problem-posing. Problem-posing tasks in learning basic C و...
In this note, we study some elementary properties of feebly nil-clean rings. A ring R is feebly nil-clean if for any $a in R$ there exist two orthogonal idempotents $e, f in R$ and a nilpotent $w in R$ such that $a = e-f +w$. We prov و...
Suppose I is a one-dimensional ideal and is in position noether with the set of variables Y and order < . It is easy to see that Ideal I , as an ideal of K Y X Y ,is a zero- dimensional ideal.Therefore, if g is an arbitpdfy polynomial, the G2V a و...
The degenerate parabolic equation appears in a wide range of applications such as porous medium equation. In general, this equation does not have a classical solution even if it has a smooth initial condition, and for this reason, weak solutions hav و...
Tensors are powerful tools for compressing data in any format. Tensorail methods such as tensor completion have many applications in various fields of image processing, artificial intelligence and data science. Nowadays, tensorial methods have numero و...
For a positive integer $n > 1$, the unitary Cayley graph $X_n$ is the graph whose vertex set is $Z_n$, the integers modulo $n$ and two vertices $x$, $y$ are adjacent if and only if $gcd(x-y, n) = 1$. $X_n$ is vertex-transitive and regular of degree و...
In this paper, we introduce the concept of hom-multipliers equation and Jordan hom- Jordan multiplier equation on Banach algebras. We investigate, a approach fixed point to the Hyers-Ulam stabilites for hom-multipliers equation on Banach alge و...
هدف از این مقاله اثبات نامساوی های مربوط به متغیرهای تصادفی با پراکندگی بزرگ و متغیرهای تصادفی هم توزیع بطوریکه در جای مناسب بریده شده باشند برخورد خواهیم کرد که در قانون قوی اعداد بزرگ یکی از مهمترین قوانین احتمال می باشد و به طور خلاصه ذکر می کند و...
در این سخنرانی یک اندازهی بی‌نظمی جدید روی گراف‌ها تعریف می‌شود و با مثال‌هایی نشان می‌دهیم که این اندازهی بی‌نظمی بهتر از اندازهی بی‌نظمی استرادا است. همچنین ثابت می‌شود که اگر گرافی در خانواده‌ی گراف‌های همبند از مرتبه‌ی $n$ و اندازه و...
In this paper, we prove the existence of a non trivial solution for a nonlinear equation via minimization on the Nehari manifold. We define m = inf I(u) ; and we show, that m is attained by some u in N which is a critical point of I considered on و...
A total dominating set of a graph G with no isolated vertices is a subset S of the vertex set such that every vertex of G is adjacent to a vertex in S . The total domination number of G is the minimum cardinality of a total dominating set of G In t و...
In this paper; a fuzzy mathematical model is considered which is a system of nonlinear fuzzy Atangana–Baleanu-Caputo (ABC) fractional differential equations with fuzzy initial value. First The existence and uniqueness of the solution is determined u و...
For an arbitpdfy nontrivial M-ideal J in a Banach space X, is there an M-ideal K in X such that J∩K is reducible? To answer this question, we look for conditions under which the set R_J-M(X)≔ K∈M-ideal(X):J∩K∈R-M-ideal(X) is nonempty, where M-id و...
In this work, numerical solution of nonlinear Hammerstein integral equations by means of differential transform method (DTM) is considered. Convergence analysis is presented. Detection of effectiveness from various aspects such as run time, differen و...
Given an additive finitely accessible category A and as the category of N-complexes whose terms belongs to it. We will introduce the category on N-complexes on it and describe a pure exact structure on A.Our main achievement is the generalization of و...
In this article, we introduce Wardowski type contractive mappings in complete $ R $-metric space and prove a fixed point theorem concerning this contraction. و...
The triple (X; d; R) is called an R- metric space, where R is a binary relation on the metric space X with d as its meter. In this article, we introduce the concept of R-connected sets in an R-metric space and give some results and new examples of و...
Given a group $G$, a subgroup $K(G)$ is defined as $K(G)=langle g,alpha =g^ -1 g^ alpha |gin G,alphain Aut(G) angle$. also $K_i(G)$ is defined inductively as $K_i(G)= g,underbrace Aut(G),...,Aut(G) _ imbox times $. A group $G$ is said to be l و...
The comparison of two parallel systems has always been of interest in various applications in reliability engineering. Classically, it is often assumed that the components of the system are independent, but in practice, this assumption is not usuall و...
مقدمه : از آنجایی که با تغییر و پیشرفت تکنولوژی ، شرایط تغییر نیز باید به طور مناسب مهیا شود، هدف از انجام این پژوهش، اولویت بندی روش های تدریس نوین درس ریاضی می باشد. روش کار : این مطالعه از نوع توصیفی تحلیلی بوده و جامعه آماری در این پژوهش کلیه ک و...
Abstract: The M-polynomial is effective in recovering neighborhood degree sum-based topological indices that predict different physical, chemical, and biological characteristics of the material under investigation. In this work, the M-polynomial of d و...
در این مقاله جهت رفع اثرات هم‌خطی از اطلاعات کمکی در قالب محدودیت‌های خطی استفاده و مدل رگرسیونی تحت محدودیت را بیان می‌کنیم. همچنین به معرفی مدل انتقال واریانس در مدل رگرسیونی محدود شده تحت محدودیت خطی تصادفی پرداخته و برآورد پارامترهای آن را محاسبه و...
In this paper, we consider a nonlinear q-fractional pantograph equation with initial condi tion. By applying the fi xed point theory, the main theorems provide some new results regarding the existence and uniqueness of solutions for q-fractional pa و...
در این مقاله، به کمک چندجمله ایهای نولند(Nørlund) و ماتریس هم مکانی متناظر با آن بر حسب نقاط هم مکانی چبیشف- لوباتو، یک رهیافت عددی برای حل دسته ای از معادلات دیفرانسیل تأخیری کسری ارایه شده است. مشتق کسری مورد بررسی از نوع کاپوتو خواهد بود. مثال‌های و...
In this paper, we investigate the eigenvalues of the following problem egin equation* egin cases left(^ _ 5 abla_k^ alpha left( ^ _ k abla_0^ alpha ight)+ ^ _ k abla _0^ alpha left( ^ _5 abla_ k ^ alpha ight) ight)u(k)=lambda u(k), و...
In this paper, a decoding procedure for cyclic codes of odd length over ring R is proposed when R ≃ R_1 . R_2 ...R_t, and decoding of cyclic codes over R_i is available. Since any finite principal ideal ring is isomorphic to a finite product of ch و...
In this paper we fuzzify the notion of nominal sets by universal algebraic approach. We introduce the category of fuzzy nominal sets and consider its relation to other familiar categories. Also we define fuzzy freshness relation and present some resu و...
In the present paper, we investigate new connections between the Poisson distribution series and some subclasses of normalized analytic functions. Further, we consider an integral operator related to Poisson distribution series. Some interesting و...
By making use of the familiar concept of modified Hadamard product, or convolution, of multivalent functions with negative coefficient, combined with an integral operator, we investigate analytic function is in a given class. In the following, using و...
Let L(X) be the Banach algebra of bounded linear operators on complex Banach space X. Suppose p,qin 1+L(X)^d, where L(X)^d denotes the set of all g-Drazin invertible elements of L(X). In this paper, we show p+qin 1+L(X)^d under the condition pq=0. T و...
The reciprocal complementary Wiener number of a connected graph $G$ is defined as $sum_ x,y subseteq V(G) frac 1 D+1-d_ G (x,y) $, where $D$ is the diameter of $G$ and the distance $d_G(x,y)$ is equal to the length of a shortest path that connects و...
Interval valued intuitionistic fuzzy graph (IVIFG) is one of the most significant issues in fuzzy graph theory, which has many applications in medical sciences today. IVIFG can manage the uncertainty, connected to the unpredictable and unspecified da و...
اگر بنا بر تقسیم بندی ای که به نوعی همچنان صادق (تقسیم حکمت بر دو بخش حکمت نظری و عملی) است به علم و عمل انسانی توجه کنیم، متوجه می شویم که این حوزه های شناختی و حکمی (چه با تقسیم بندی حکمای قدیم چه با تقسیم بندی فلاسفه علم جدید) به هیچ وجه جدایی از و...
A generalization of $lambda$-compact spaces and paracompact spaces are introduced and studied. An open cover of a space $X$ is called locally-$lambda$ if every point of the space has a neighborhood, say $G$, such that the family of the sets in this و...
Let $R$ be a commutative Noetherian ring with non-zero identity and $I$ be an ideal of $R$. Let $M$ and $N$ be two finitely generated $R$-modules such that $ m pd _ R (M) و...
The uniform subset graph G(v,k,t) is a graph defined by all k-subsets of a v-set as its versices with edges connecting all k-subsets intersecting exactly at t elements. In this paper we give some dominating sets for G(v,k,1); k = 2,3,4,5. و...
In this paper we generalize the concept of harmonically convex to harmonically $s$-convex that $s$ is a real number in $(circ,1 $ and attention to Sandwich theorem. Also, we investigate stability of Hyers-Ulam for them. و...
In this paper, determination of a source term and a boundary flux function in a time fractional order parabolic equation is investigated using a mollified space marching method. و...
In this paper, new analytical solutions for a class of conformable fractional differential equations (CFDEs) and some more results about fractional Laplace transform introduced by Abdeljawad are investigated. We use the fractional Laplace transform t و...
In this paper, we construct new positive definite radial basis functions (RBFs) by using integral transforms with non-negative densities and completely monotone integral kernels. In order to show the efficiency of the proposed basis, we interpolate t و...
The noninner conjecture asserts that every finite nonabelian $p$-group admits a noninner automorphism of order $p$. In this paper we review old and new results on this conjecture. The author has a modest contribution to some of the results. و...
In this work, we use subordination to a subclass of meromorphic bi-univalent functions. In the following, we obtain bounds for the general and initial coefficients for such functions. The results obtained in this paper would generalize and impr و...
Abstract. Let G be a group, Aut(G) and L(G) denote the full automorphisms group and absolute center of G, respectively. An automorphism α ∈ Aut(G) is called autocentral automorphism if g−1α(g) ∈ L(G), for all g ∈ G. In this article, we study some new و...
In this paper we apply generalization of Ekeland’s variational principle in partially ordered complete modular metric spaces on sets defined by maps by using the mix monotone property to obtain sufficient conditions for the existence of some fixed p و...
In this paper, we obtain some new fixed point results for multi-valued and single-valued mappings in a Manger PbM-space. We first define the notions of (α−ψ)-E-type simulation functions and ((β−ψ)-E-type simulation functions in Menger PbM-spaces و...
By using a critical point result for differentiable functionals, we establish the existence of infinitely many solutions for $p$-Laplacian parametric equations on unbounded intervals. A concrete example is presented to illustrate the main result. و...
افزایش ظرفیت شبکه های بی سیم به علت درخواست روز افزون ترافیک داده منجر به فعالیت های تحقیقاتی زیادی شده است. تداخل مهمترین عامل کاهش کارایی و ظرفیت شبکه‌های بی‌سیم می‌باشد. در این مقاله شبکه های بی سیم زیرساخت دار در نظر گرفته شده است و مسئله انتخاب و...
In this paper, for a Banach algebra $A$ and a non-zero multiplicative linear functional $phi:A ightarrow mathbb C $, we define and study the notion of left $phi$-biflatness and approximate left $phi$-biprojectivity. We show that the Segal algebra $S( و...
Several intersection matrices of $s$-subsets vs. $k$-subsets of a $v$-set are introduced in the literature, particularly in design theory and extremal set theory. We consider these matrices in a uniform framework which yields some useful ident و...
Abstract. In this paper, we define new automorphisms on the lower central series and the derived series and we identify the relationships of these automorphisms with IA(G), Aut_c(G), Inn(G), and each other. Also, according to the definitions of Bonan و...
In this paper, we show that there exists a strongly regular graph with parameters (3250,57,0,1) if and only if there exists an antipodal distance-regular graph with intersection array (56,55,1;1,1,56). و...
امروزه تحققات گسترده به منظور مطالعه شبکه‌های بی‌سیم و افزایش ظرفیت آنها در حال انجام است و در این مطالعات مدل‌سازی ریاضی مسأله نقش پرنگی دارد. در این مقاله از مفهوم گراف تداخل برای شبکه‌های بی‌سیم زیرساخت‌دار استفاده شده است. گروهک بیشینه در گراف و...
Abstract. ✓ Motivation or Purpose: Stochastic marine bacteriophage infection model arises in biomathematics. In general, it is not possible to find explicit solutions to such SDEs. ✓ Problem: We propose a numerical technique for approximation of و...
Stomach nervous system plays a crucial role in the human body. The aim of this study is to investigate a simplified mathematical model to describe the dynamics of stomach nervous system. The design of the mathematical model is described interms o و...
This note tries to study the interval matrix equation AX = B, where A is a known square interval matrix of dimension mm, B is a rectangular interval matrix of dimension mn, while the unknown matrix X is also of dimension mn. First some propertie و...
In this paper, firstly, we obtain the credibility measure of fuzzy heptagonal variables. Also, we attain the expected value of fuzzy heptagonal variables. Then, based on these theorems, we present the expected value Nash equilibrium strategy of the و...
In this paper, we consider the Europe oil prices, Brent, American stock market index based on the market capitalizations of 500 large companies having common stock listed on the NYSE or NASDAQ, $S&P500$, and the real gross domestic pr و...
اینجانب سیمین حمزه نژاد مشغول به خدمت در سال تحصیلی 400-99 با سمت معلم آموزگار در مدرسه شهید محمد بازدار می باشم. من در این تحقیق (چگونه توانستم مشکل یادگیری جمع وتفریق را در دانش آموزان پایه اول آسان کنم) و درس شیرین و پر محتوا ی ریاضی را جهت جل و...
چكيده: در این مقاله به بررسی توابع تحلیلی در فضاهای باناخ و حد این توابع در فضای باناخ ﭘرداخته شده و در ادامه جبرهای یکنواخت از توابع تحلیلی و قضیه مقدار حدی برای جبرهای یکنواخت از توابع تحلیلی از جمله برای جبر A(B) از توابع ﭘیوسته روی گوی واحد B، جب و...
فرآیند یاددهی و یادگیری می تواند یاد گیرنده را در هر مکان و زمانی به طور عمیق با فعالیتهای آموزشی دیگر مرتبط و تجارب او را در این زمینه به گونه ای بسیار موثر تقویت کند. ما معلمان می توانیم روشهای آموزشی خود را به گونه ای تنظیم کنیم که دانش آموزان بتو و...
Machine learning (ML) has developed into an effective technique for predicting wear behavior of solid materials. Ultrahigh-carbon steels are mostly utilized in the fabrication of working devices such as rolling mills, forklifts, and bulldozers, as w و...
The concept of woven frames is partially motivated by preprocessing of Gabor frames, and has potential applications in wireless sensor networks that require distributed processing under different frames. The aim of this paper is to introduce woven و...
The purpose of this article, is to establish the existence of solution of infinite systems of fractional differential equations in space of tempered sequence $m^eta(phi)$ by using techniques associated with Hausdorff measures of noncompactness an و...
In this paper, we define φ-Connes module amenability of a dual Banach algebra A, where φ is a bounded module homomorphism from A to itself that is ! -continuous. We give a characterization of φ-Connes module amenability for A via modul φ-derivatio و...
In this note we prove that a homogenous mapping $T$ (neither additivity nor continuity is assumed a priori) from a unital C$^*$-algebra $A$ into its dual space, $A^*$, which satisfies the following identity $$T( a,b,a )= T(a),b,a + a,T(b),a + a,b,T( و...
Abstract. In this paper, we define new automorphisms on the lower central series and the derived series and we identify the relationships of these automorphisms with IA(G), Aut_c(G), Inn(G), and each other. Also, according to the definitions of Bonan و...
The problem of finding an integral basis of an algebraic number field is one of the most important subjects in algebraic number theory. In this paper, our aim is to study the construction of integral bases of pure prime degree number fields (or sim و...
Abstract When using any system, specifically control systems, it is necessary to make the system stable, and we may wonder what is meant by the stability of the system and when the system is stable And when it is unstable, is the system semi-stable, و...
So far, the Adomian decomposition method has been widely used to solve a variety of differential equations Taken. But in some cases it has been seen that this method is less accurate than the methods It has other hemotopic methods. Since this method و...
از جمله مهمترین مطالبی که در طرح یک سیستم کنترل مطرح می‌شود، مبحث پایداری است. بیشترین تحقیقات امروزی در حوزه کنترل پایداری صورت می‌گیرد. روشهای زیادی برای بررسی پایداری یک سیستم کنترلی وجود دارند که فقط جنبه های خاصی از پایداری را مورد بررسی قرار م و...
In this article, while considering some properties of Min(Cc(X)) as a minimal prime spectrum of Cc(X) with Zariski topology, we introduce some spaces such as countably cozero complemented space, c-perfectly normal space and O_z^c -space in which M و...
The aim of this research is to define ⊥-proximally increasing mapping and obtain several best proximity point results concerning this mapping in the framework of new spaces, which is called orthogonal b-metric spaces. و...
In this work, a machine learning algorithm based on the Gaussian process is employed to learning the unknown parameters in the inverse advection-diffusion equation. The Gaussian process priors are modified according to the linear operator in the gove و...
A commutative ring $R$ is called it additively regular if for each regular element $fin R$ and each $gin R$, there is an element $tin R$ such that $g+ft$ is regular. In this note, we focus on $C(X)$ to study spaces $X$ when $C(X)$ is an additively و...
In this paper, we introduce a new algorithm for solving the split common fixed point problem for a finite family of relatively nonexpansive mappings and generalized demimetric mappings in uniformly smooth and uniformly convex Banach spaces. We d و...
Graph burning process and its corresponding parameter, called burning number, can be seen as a model for the spread of social contagion and a measure for its speed, respectively. Here we define a slightly different graph process with its correspond و...
In this paper, we establish further improvements of the Young inequality and its reverse. Then, we assert operator versions corresponding them. Moreover, an application including positive l و...
Let $ F $ be a free abelian group with finite rank. Then $ In(F) $ is the subgroup inclusion graph on $ F $, where the vertex set is the collection of non-trivial proper subgroups of a free group with finite rank and two vertices are adjac و...
Let $L_c(X)= fin C(X) : overline C_f =X $, where $C_f$ is the union of all open subsets $Usubseteq X$ such that $|f(U)|leqaleph_0$. The concepts of $e_l-$Filters and $e_l-$ideals has been introduced and studied in $L^*_c(X)$. it is shown the maximal و...
In this paper, we consider a variational inequality problem which is defined over the intersection of the set of common fixed points of a finite family of generalized demimetric mappings and the set of common zero points of a finite family of max و...
In this paper, we will establish several equivalent conditions of unique ergodicity for skew-product transformations with discontinuity from the point of view of topology. The main assumptions are that the discontinuity sets of transformations are و...
The best-worst method (BWM) is a tool in multiple criteria decision making (MCDM), one of the young pairwise comparison methods. Obtaining the weight (priority) vector of decision elements (criteria or decision alternatives) in this approach is as im و...
حدس غیر داخلی بیان می‌کند که هر p-گروه متناهی ناآبلی دارای دست کم یک خودریختی غیر داخلی از مرتبه p است. در مقاله به کمک ابزاری از جبرخطی و ریاضی عمومی فضای بررسی این حدس را به p-گروه‌های G که همرده آنها بیشتر از مینیمم تعداد مولدشان است کاهش می‌د و...
This article presents certain families of analytic and multivalent functions regarding q starlikeness and q convexity of order α. By using concept of neighborhoods of p valent function, we prove the coefficient bound and associated inclusion relation و...
In this paper we introduce modular frame, woven modular frame in Hilbert C∗-modules. And we show that they share many properties with و...
In this paper we use the notion of nilpotent soft sets to the theory of BCK(BCI)-algebras. We introduce the concept of nilpotent soft BCK(BCI )-algebras and nilpotent soft BCK(BCI )-subalgebras and Then, we show the famouse properties o و...
In this paper, a method is proposed to solve fuzzy matrix system of equation as AX=B where A is a known real matrix, B is a known fuzzy matrix and X is an unknown fuzzy matrix. The calculus operations based on transmission average is reviewed and و...
In this paper, a new approach based on an alteration of usage of optimal homotopy asymptotic method (OHAM), called multistage optimal homotopy asymptotic method (MOHAM) is utilized to derive an approximate solution to Fredholm linear integral equatio و...
Tensors as vector fields structures and manifolds as great geometrical-topological structures have many applications in the fields of big data analysis. Types of norms, metrics, and scalable structures have been defined from various aspects. Nowadays و...
In this paper we introduce modular frame, woven modular frame in Hilbert C∗-modules. And we study some definitions and basic properties of Hilbert C∗-modules and woven frames , Riesz basis in Hilbert C∗-modules.Under what conditions can a sequence و...
This sutdy is devoted to obtain the approximate solutions of an epidemic model for HIV infection of CD4$^ + $ T-cells. This model is a system of ordinary differential equations. A three layer feedforward neural networks optimized with backpropag و...
Recently, a measure of information called Jensen-Shannon (JS) information was used to compare the coherent systems in reliability theory. JS is defined based on the notion of the vector of signature of coherent systems. The signature of a coherent و...
In this paper, after giving a systematic representation of different types of censoring schemes, we construct Brownian motion on stochastic time scales generated by hybrid censoring scheme and prove some of its properti و...
Let A be a Banach algebra. An element a in A has gs-Drazin inverse if there exists b in A such that b=bab, ab=ba and a ab in A^ qnil . Additive results for the gs-Drazin inverse in Banach algebras are investigated. We prove that for any a,b in A^ و...
In this paper, we de ne and consider, the category FPos-S of all S- fuzzy posets, and action-preserving monotone maps between them. S-fuzzy poset congruences which play an important role in studying the categorical properties of S-fuzzy posets are و...
The resource allocation problem has been considered as one of most critical concerns in many managerial applications. In this paper, we deal with the resource allocation problem in the context of Data Envelopment Analysis(DEA) and formulate a DEA-bas و...
In this article, a generalized version of the univariate Birnbaum-saunders distribution based on the skew slash normal distribution is introduced and its characterizations, properties are studied. Also maximum likelihood estimation of the parameters و...
Abstract. In this paper we propose an approach for solving multi-objective linear fractional programming (MOLFP) problem in which the coefficients of objective functions and the right hand side of the constraints are stochastic. Using the probability و...
Data Envelopment Analysis (DEA) is a mathematical programming-based technique for evaluating a set of homogeneous decision making units with multiple inputs and multiple outputs. One of the critical assumption when implementing the DEA approach is و...
In this paper, we introduced and studied a new class of mappings in modular metric spaces that is generalized of a P-function introduced in Chaipunya et al.(2012). With our new class, we furnish fi xed point theorems for ω-continuous, non ω-continu و...
Abstract. To describe the different types of diseases, especially infectious diseases, we can use mathematical modeling. Mathematical models can be used todays to describe a variety of diseases. In this paper, we intend to express the different math و...
هدف: هدف پژوهش حاضر آشکارسازی موضوعات پژوهشی کووید 19 در دو حوزه زیست شناسی محاسباتی ریاضی و برنامه های میان رشته ای ریاضی بر اساس آثار نمایه شده در وب آو ساینس است. روش شناسی: پژوهش حاضر از نوع توصیفی با رویکرد علم‌سنجی و روش تحلیل محتوا و بهره من و...
In this lecture, we introduce the concept of the stable fixed point property for mappings, and we prove the existence of the stable fixed point property for continuous mappings defined on a compact and subset of a complete geodesic space. Also, و...
Abstract. This paper deals with the finite time stability and control for a class of perturbed chaotic systems. The Lyapunov direct method is developed to provide the basis for the stability proof of the system considered. The sliding mode control و...
تابع یکی از مفاهیم مهم و زیربنایی ریاضیات است ، توابع یک ایده متحدکننده مهم NCTM^*در سرتاسر برنامه درسی ریاضیات مدرسه نیز حضور دارند . شواهد نشان می دهد که دانش آموزان در درک مفهوم تابع مشکل دارند ، زیرا توانایی برقراری رابطه بین ساختار مفهومی و نمای و...
In this paper, we show that a unique continuous s-point space, geodesic segment are convex and non empty geodesically convex subsets of this space are contractible. و...
In this paper, we define -Connes module amenability of a semigroup algebra l1(S), where S is a semigroup and is a bounded module homomorphism from l1(S) to l1(S) that is !-continuous. We characterize the semigroup algebra l1(S) via -module nor و...
Let $R$ be a ring and $M$ be an $R$-module. Two modules $A$ and $B$ are called orthogonal, written $Aperp B$, if they do not have non-zero isomorphic submodules. We consider an associated graph $Gamma_ ot (M)$ to $M$ with vertices $mathcal M _ p و...
In this paper, we prove the existence and uniqueness theorem of fixed point for mappings on a generalized orthogonal metric space and generalized orthogonal b-metric space. و...
A normal subgroup H of G is said to be hypercyclically embedded in G if every chief factor of G below H is cyclic. A subgroup H of a finite group G is called Weakly S-semipermutable in G if there exist a normal subgroup K of G such that HK is S-pe و...
For a family of von Neumann algebras $left(M_ i ight)_ i in I $ and a locally compact group $G$, we consider the concept of $G$-amenability of direct sum $igoplus_ i M_ i $. We prove that if $igoplus_ i M_ i $ is G-amenable, then every $ و...
In this paper, fi rstly, we introduce -admissible Z-contraction and -admissibleN-contraction via stimulation functions. Secondly, we prove some new xed point theorems for de ned class of contractions via -admissible stim- ulation mappings. و...
This paper aims to predict the maximum electric energy demand that is helpful to ease the appropriate arrangement of effective situations (such as the scheduling of eliminating some consumers). In this study, there are 24 features, the backward, fo و...
In this paper, we develop a new approach to solving a class of multi-follower multi-objective linear bilevel programming (MMLBP) problems, wherein each decision maker has multiple objective functions conflicting with each other. We show that و...
A space X is an $ F_c $-space if for each $fin C_c(X)$, pos $f$ and neg $f$ have disjoint closures. It is shown that a strongly zero-dimensional space $X$ is an $F $-space if and only if $X$ is an $ F_c $-space. $ F_c $ و...
Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). Some heat transfer problems cannot be solve و...
One of the most challenging issues in the protection of endangered species, habitats, and ecosystems (we called them taxes) is their priority for (limited) budgeting because the lives of humans, creatures, plants, and the environment are closely rela و...
X Motivation or Purpose: Recently, fractional differential equations (FDEs) have attracted much attention. X Problem: Fractional Mathieu equation is a well-known FDE. X Method: Here, a method based on operational matrix of triangular functions for و...