@article { author = {Taati, Mohammad and Moradi, Sirous and Najafzadeh, Shahram}, title = {Some properties and results for certain subclasses of starlike and convex functions}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {1-15}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.24245}, abstract = {In the present paper, we introduce and investigate some properties of two subclasses $ \Lambda_{n}( \lambda , \beta ) $ and $ \Lambda_{n}^{+}( \lambda , \beta ) $;  meromorphic and starlike  functions of order $ \beta $. In particular, several inclusion relations, coefficient estimates, distortion theorems and covering theorems are proven here for each of these function classes.}, keywords = {Analytic functions,Starlike functions,Convex functions,Coefficient estimates}, url = {https://scma.maragheh.ac.ir/article_24245.html}, eprint = {https://scma.maragheh.ac.ir/article_24245_3db9b5e2b7f48b134162a38559056bf6.pdf} } @article { author = {Datta, Sanjib Kumar and Biswas, Tanmay and Mondal, Golok Kumar}, title = {On some results of entire functions of two complex variables using their relative lower order}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {17-26}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.24171}, abstract = {Some basic properties relating to relative lower order of entire functions of two complex variables are discussed in this paper.}, keywords = {Entire functions of two complex variables,Relative lower order of two complex variables,Property(A)}, url = {https://scma.maragheh.ac.ir/article_24171.html}, eprint = {https://scma.maragheh.ac.ir/article_24171_0a9ec9133fe3b9cb12b1af69da4a8b64.pdf} } @article { author = {Khorshidvandpour, Sajad and Aminpour, Abdolmohammad}, title = {On the reducible $M$-ideals in Banach spaces}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {27-37}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.23873}, abstract = {The object of the investigation is to study reducible $M$-ideals in Banach spaces. It is shown that if the number of $M$-ideals in a Banach space $X$ is $n(<\infty)$, then the number of reducible $M$-ideals does not exceed of $\frac{(n-2)(n-3)}{2}$. Moreover, given a compact metric space $X$, we obtain a general form of a reducible $M$-ideal in the space $C(X)$ of continuous functions on $X$. The intersection of two $M$-ideals is not necessarily reducible. We construct a subset of the set of all $M$-ideals in a Banach space $X$ such that the intersection of any pair of it's elements is reducible. Also, some Banach spaces $X$ and $Y$ for which $K(X,Y)$ is not a reducible $M$-ideal in $L(X,Y)$, are presented. Finally, a weak version of reducible $M$-ideal called semi reducible $M$-ideal is introduced.}, keywords = {$M$-ideal,Reducible $M$-ideal,Maximal $M$-ideal,$M$-embedded space,Semi reducible $M$-ideal}, url = {https://scma.maragheh.ac.ir/article_23873.html}, eprint = {https://scma.maragheh.ac.ir/article_23873_5d80e8659619ca4eed8588332a074319.pdf} } @article { author = {Haghnejad Azar, Kazem and Mousavi Amiri, Masoumeh}, title = {Some notes for topological centers on the duals of Banach algebras}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {39-48}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.23648}, abstract = {We introduce  the weak topological centers of left and right module actions and we study some of their properties.  We investigate the relationship between these new concepts and the  topological centers of of left and right module actions with some results in the group algebras.}, keywords = {Topological center,Weak topological center,Arens regularity,Module action,$n$-th dual}, url = {https://scma.maragheh.ac.ir/article_23648.html}, eprint = {https://scma.maragheh.ac.ir/article_23648_1ec312b49c036b8f109bb89d68ad5f9c.pdf} } @article { author = {Faraji, Hamid and Nourouzi, Kourosh}, title = {Fixed and common fixed points for $(\psi,\varphi)$-weakly contractive mappings in $b$-metric spaces}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {49-62}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.26524}, abstract = {In this paper, we give a fixed point theorem for $(\psi,\varphi)$-weakly contractive mappings in complete $b$-metric spaces. We also give a common fixed point theorem for such mappings in complete $b$-metric spaces via altering functions. The given results generalize two known results in the setting of metric spaces. Two examples are given to verify the given results.}, keywords = {Fixed point,b-Metric space,$(psi,varphi)$-Weakly contractive mapping,Altering distance function}, url = {https://scma.maragheh.ac.ir/article_26524.html}, eprint = {https://scma.maragheh.ac.ir/article_26524_8a6a402e1e1be61df43bb98824f5b617.pdf} } @article { author = {Shojaei, Hamid}, title = {Certain subclasses of bi-univalent functions associated with the Aghalary-Ebadian-Wang operator}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {63-73}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.25952}, abstract = {In this paper, we introduce and investigate two new subclasses of the functions class $ \Sigma $ of bi-univalent functions defined in the open unit disk, which are associated with the Aghalary-Ebadian-Wang operator. We  estimate the coefficients $|a_{2} |$ and  $|a_{3} |$ for functions in these new subclasses. Several  consequences of the result are also pointed out.}, keywords = {Analytic functions,Bi-univalent functions,Univalent functions,Convolution operator}, url = {https://scma.maragheh.ac.ir/article_25952.html}, eprint = {https://scma.maragheh.ac.ir/article_25952_649aa54b8f8400e14883fcb750497e60.pdf} } @article { author = {Fallahi, Kamal}, title = {$G$-asymptotic contractions in metric spaces with a graph and fixed point results}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {75-83}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.23946}, abstract = {In this paper, we discuss the existence and uniqueness of fixed points for $G$-asymptotic contractions in metric spaces endowed with a graph. The result given here is a new version of Kirk's fixed point theorem for asymptotic contractions in metric spaces endowed with a graph. The given result here is a generalization of fixed point theorem for asymptotic contraction from metric s paces to metric spaces endowed with a graph.}, keywords = {$G$-asymptotic contraction,Orbitally $G$-continuous self-map,Fixed point}, url = {https://scma.maragheh.ac.ir/article_23946.html}, eprint = {https://scma.maragheh.ac.ir/article_23946_19404569cb84bcaf00c0dcb506605188.pdf} } @article { author = {Parvaneh, Vahid and Hussain, Nawab and Hosseinzadeh, Hasan and Salimi, Peyman}, title = {Coupled fixed point results for $\alpha$-admissible Mizoguchi-Takahashi contractions in $b$-metric spaces with applications}, journal = {Sahand Communications in Mathematical Analysis}, volume = {07}, number = {1}, pages = {85-104}, year = {2017}, publisher = {University of Maragheh}, issn = {2322-5807}, eissn = {2423-3900}, doi = {10.22130/scma.2017.25889}, abstract = {The aim of this paper is to  establish some fixed point theorems for $\alpha$-admissible Mizoguchi-Takahashi contractive mappings defined on a ${b}$-metric space which generalize the results of Gordji and Ramezani \cite{Roshan6}. As a result, we obtain some coupled fixed point theorems which generalize the results of \'{C}iri\'{c} {et al.} \cite{Ciric3}. We also present  an application in order to illustrate the effectiveness of our results.}, keywords = {${b}$-metric space,Partially ordered set,Coupled fixed point,Mixed monotone property}, url = {https://scma.maragheh.ac.ir/article_25889.html}, eprint = {https://scma.maragheh.ac.ir/article_25889_18a209b89b02b6b39db270e94994f630.pdf} }