مرور Volume 43, Issue 6 بر اساس عنوان
در حال نمایش موارد 1 - 20 از 30
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Applications of convolution and subordination to certain $p$-valent functions (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper we considered some new classes of multivalent functions by using Aouf-Silverman-Srivastava operator and derived some important results using convolution and subordination technique. This new class is an ...
 
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Caratheodory dimension for observers (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this essay we introduce and study the notion of dimension for observers via Caratheodory structures and relative probability measures. We show that the dimension as a three variables function is an increasing function ...
 
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Classification of solvable groups with a given property (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper we classify all finite solvable groups satisfying the following property P5: their orders of representatives are set-wise relatively prime for any 5 distinct non-central conjugacy classes.
 
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Classifying pentavalnet symmetric graphs of order $24p$ (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)A graph is said to be symmetric if its automorphism group is transitive on its arcs. A complete classification is given of pentavalent symmetric graphs of order 24p for each prime p. It is shown that a connected pentavalent ...
 
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A descent method for explicit computations on curves (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)It is shown that the knowledge of a surjective morphism $Xto Y$ of complex curves can be effectively used to make explicit calculations. The method is demonstrated by the calculation of $j(ntau)$ (for some small ...
 
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Duality for vector equilibrium problems with constraints (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In the paper, we study duality for vector equilibrium problems using a concept of generalized convexity in dealing with the quasi-relative interior. Then, their applications to optimality conditions for quasi-relative ...
 
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Entropy of a semigroup of maps from a set-valued view (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, we introduce a new entropy-like invariant, named Hausdorff metric entropy, for finitely generated semigroups acting on compact metric spaces from a set-valued view and study its properties. We establish the ...
 
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Existence of positive solutions for a second-order p-Laplacian impulsive boundary value problem on time scales (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, we investigate the existence of positive solutions for a second-order multipoint p-Laplacian impulsive boundary value problem on time scales. Using a new fixed point theorem in a cone, sufficient conditions ...
 
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Functional identities of degree 2 in CSL algebras (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)Let $mathscr{L}$ be a commutative subspace lattice generated by finite many commuting independent nests on a complex separable Hilbert space $mathbf{H}$ with ${rm dim}hspace{2pt}mathbf{H}geq 3$, ${rm Alg}mathscr{L}$ ...
 
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High-accuracy alternating segment explicit-implicit method for the fourth-order heat equation (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)Based on a group of new Saul'yev type asymmetric difference schemes constructed by author, a high-order, unconditionally stable and parallel alternating segment explicit-implicit method for the numerical solution of the ...
 
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Hölder continuity of solution maps to a parametric weak vector equilibrium problem (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, by using a new concept of strong convexity, we obtain sufficient conditions for Holder continuity of the solution mapping for a parametric weak vector equilibrium problem in the case where the solution mapping ...
 
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A hybrid mean value involving a new Gauss sums and Dedekind sums (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, we introduce a new sum analogous to Gauss sum, then we use the properties of the classical Gauss sums and analytic method to study the hybrid mean value problem involving this new sums and Dedekind ...
 
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Hyperbolic surfaces of $L_1$-2-type (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, we show that an $L_1$-2-type surface in the three-dimensional hyperbolic space $H^3subset R^4_1$ either is an open piece of a standard Riemannian product $ H^1(-sqrt{1+r^2})times S^{1}(r)$, or it has non ...
 
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Initial coefficients of starlike functions with real coefficients (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)The sharp bounds for the third and fourth coefficients of Ma-Minda starlike functions having fixed second coefficient are determined. These results are proved by using certain constraint coefficient problem for functions ...
 
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The lower bound for the number of 1-factors in generalized Petersen graphs (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, we investigate the number of 1-factors of a generalized Petersen graph $P(N,k)$ and get a lower bound for the number of 1-factors of $P(N,k)$ as $k$ is odd, which shows that the number of 1-factors ...
 
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A new hybrid conjugate gradient algorithm for unconstrained optimization (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)In this paper, a new hybrid conjugate gradient algorithm is proposed for solving unconstrained optimization problems. This new method can generate sufficient descent directions unrelated to any line search. Moreover, the ...
 
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On derivations and biderivations of trivial extensions and triangular matrix rings (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)Triangular matrix rings are examples of trivial extensions. In this article we determine the structure of derivations and biderivations of the trivial extensions, and thereby we describe the derivations and biderivations ...
 
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On normalizers of maximal subfields of division algebras (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)Here, we investigate a conjecture posed by Amiri and Ariannejad claiming that if every maximal subfield of a division ring $D$ has trivial normalizer, then $D$ is commutative. Using Amitsur classification of ...
 
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On three-dimensional $N(k)$-paracontact metric manifolds and Ricci solitons (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)The aim of this paper is to characterize $3$-dimensional $N(k)$-paracontact metric manifolds satisfying certain curvature conditions. We prove that a $3$-dimensional $N(k)$-paracontact metric manifold $M$ admits a Ricci ...
 
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Properties of matrices with numerical ranges in a sector (Springer and the Iranian Mathematical Society (IMS), 2017-11-01)Let $(A)$ be a complex $(ntimes n)$ matrix and assume that the numerical range of $(A)$ lies in the set of a sector of half angle $(alpha)$ denoted by $(S_{alpha})$. We prove the numerical ranges of the conjugate, inverse ...
 



