@Article{Geng2012,
author="Geng, Fazhan",
title="Solving integral equations of the third kind in the reproducing kernel space",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="543-551",
abstract="A reproducing kernel Hilbert space restricts the space of functions to smooth functions and has structure for function approximation and some aspects in learning theory. In this paper, the solution of an integral equation of the third kind is constructed analytically using a new method. The analytical solution is represented in the form of series in the reproducing kernel space. Some numerical examples are studied to demonstrate the accuracy of the present method. Results obtained by the method are compared with the exact solution of each example and are found to be in good agreement with each other.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_213.html"
}
@Article{Pavlovic2012,
author="Pavlovic, Vladimir
and Cvetkovi' c, Aleksandar S.",
title="On generalized topologies arising from
mappings",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="553-565",
abstract="Given a mapping $f:Xto X$ we naturally associate to it a monotonic map $gg_f:exp Xto exp X$ from the power set of $X$ into itself, thus inducing a generalized topology on $X$. In this paper we investigate some properties of generalized topologies which are defined by such a procedure.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_220.html"
}
@Article{Alijani2012,
author="Alijani, Azadeh
and Dehghan, Mohammad Ali",
title="G-frames and their duals for Hilbert C*-modules",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="567-580",
abstract="Abstract. Certain facts about frames and generalized frames (g- frames) are extended for the g-frames for Hilbert C*-modules. It is shown that g-frames for Hilbert C*-modules share several useful properties with those for Hilbert spaces. The paper also character- izes the operators which preserve the class of g-frames for Hilbert C*-modules. Moreover, a necessary and suffcient condition is ob- tained for an operator T whose corresponding singleton set {T} to be a g-frame. Finally, some characterizations of dual g-frames for Hilbert spaces and Hilbert C*-modules are given.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_206.html"
}
@Article{Luo2012,
author="Luo, Qiuhong
and Wang, Xiantao",
title="The starlikeness, convexity, covering theorem and extreme points of p-harmonic mappings",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="581-596",
abstract="The main aim of this paper is to introduce three classes $H^0_{p,q}$, $H^1_{p,q}$ and $TH^*_p$ of $p$-harmonic mappings and discuss the properties of mappings in these classes. First, we discuss the starlikeness and convexity of mappings in $H^0_{p,q}$ and $H^1_{p,q}$. Then establish the covering theorem for mappings in $H^1_{p,q}$. Finally, we determine the extreme points of the class $TH^*_{p}$.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_224.html"
}
@Article{Chu2012,
author="Chu, Yuming
and Shi, Mingyu
and Jiang, Yueping",
title="Optimal inequalities for the power, harmonic and logarithmic means",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="597-606",
abstract="For all $a,b>0$, the following two optimal inequalities are presented: $H^{alpha}(a,b)L^{1-alpha}(a,b)geq M_{frac{1-4alpha}{3}}(a,b)$ for $alphain[frac{1}{4},1)$, and $ H^{alpha}(a,b)L^{1-alpha}(a,b)leq M_{frac{1-4alpha}{3}}(a,b)$ for $alphain(0,frac{3sqrt{5}-5}{40}]$. Here, $H(a,b)$, $L(a,b)$, and $M_p(a,b)$ denote the harmonic, logarithmic, and power means of order $p$ of two positive numbers $a$ and $b$, respectively.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_225.html"
}
@Article{Chen2012,
author="Chen, Yi
and Chen, Dezhu
and Lv, Zhanmei",
title="The existence results for a coupled system of nonlinear fractional differential equations with multi-point boundary conditions",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="607-624",
abstract="In this paper, we study a coupled system of nonlinear fractional diﬀerential equations with multi-point boundary condi- tions. The diﬀerential operator is taken in the Riemann-Liouville sense. Applying the Schauder ﬁxed-point theorem and the contrac- tion mapping principle, two existence results are obtained for the following system D^{alpha}_{0+}x(t)=fleft(t,y(t),D^{p}_{0+}y(t)right), t in (0,1), D^{beta}_{0+}y(t)=gleft(t,x(t),D^{q}_{0+}x(t)right), t in (0,1), x(0)=x'(0)=x''(0)=cdots=x^{(m-2)}(0)=0, x(1)=lambda x(xi) ,0y(0)=y',(0)=y''(0)=cdots=y^{(m-2)},(0)=0, y(1)=lambda y(xi) , 0where m in mathbb{N}, m geq 2,alpha,,beta in (m-1,m) and alpha,beta,p,q,lambda satisfy certain conditions.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_227.html"
}
@Article{Radenovi'c2012,
author="Radenovi'c, Stojan
and Kadelburg, Zoran
and Jandrli'c, Davorka
and Jandrli'c, Andrija",
title="Some results on weakly contractive maps",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="625-645",
abstract="In this paper direct proofs of some common fixed point results for two and three mappings under weak contractive conditions are given. Some of these results are improved by using different arguments of control functions. Examples are presented showing that some generalizations cannot be obtained and also that our results are distinct from the existing ones.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_229.html"
}
@Article{ForoudiGhasemabadi2012,
author="Foroudi Ghasemabadi, Mahnaz
and Iranmanesh, Ali",
title="2-quasirecognizability of the simple groups B_n(p) and C_n(p) by prime graph",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="647-668",
abstract="Let G be a finite group and let $GK(G)$ be the prime graph of G. We assume that $n$ is an odd number. In this paper, we show that if $GK(G)=GK(B_n(p))$, where $ngeq 9$ and $pin {3,5,7}$, then G has a unique nonabelian composition factor isomorphic to $B_n(p)$ or $C_n(p)$ . As consequences of our result, $B_n(p)$ is quasirecognizable by its spectrum and also by a new proof, the validity of a conjecture of W. J. Shi for $B_n(p)$ is obtained.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_260.html"
}
@Article{Laleh2012,
author="Laleh, Abolghasem
and Mir Mohamad Rezaii, Morteza
and Ahangari, Fateme",
title="Identification of Riemannian foliations on the
tangent bundle via SODE structure",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="669-688",
abstract="The geometry of a system of second order differential equations is the geometry of a semispray, which is a globally defined vector field on TM. The metrizability of a given semispray is of special importance. In this paper, the metric associated with the semispray S is applied in order to study some types of foliations on the tangent bundle which are compatible with SODE structure. Indeed, sufficient conditions for the metric associated with the semispray S are obtained to extend to a bundle-like metric for the lifted foliation on TM. Thus, the lifted foliation converts to a Riemanian foliation on the tangent space which is adapted to the SODE structure. Particularly, the metrizability property of the semispray S is applied in order to induce SODE structure on transversals. Finally, some equivalent conditions are presented for the transversals to be totally geodesic.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_232.html"
}
@Article{Ghosseiri2012,
author="Ghosseiri, Nader Mohammad",
title="On Jordan left derivations and generalized Jordan left derivations of matrix rings",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="689-698",
abstract="Abstract. Let R be a 2-torsion free ring with identity. In this paper, first we prove that any Jordan left derivation (hence, any left derivation) on the full matrix ringMn(R) (n 2) is identically zero, and any generalized left derivation on this ring is a right centralizer. Next, we show that if R is also a prime ring and n 1, then any Jordan left derivation on the ring Tn(R) of all n×n upper triangular matrices over R is a left derivation, and any generalized Jordan left derivation on Tn(R) is a generalized left derivation. Moreover, we prove that any generalized left derivation on Tn(R) is decomposed into the sum of a right centralizer and a Jordan left derivation. Some related results are also obtained.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_234.html"
}
@Article{Yang2012,
author="Yang, Liping",
title="Convergence theorems of an implicit iteration process for asymptotically pseudocontractive mappings",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="699-713",
abstract="The purpose of this paper is to study the strong convergence of an implicit iteration process with errors to a common fixed point for a finite family of asymptotically pseudocontractive mappings and nonexpansive mappings in normed linear spaces. The results in this paper improve and extend the corresponding results of Xu and Ori, Zhou and Chang, Sun, Yang and Yu in some aspects.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_235.html"
}
@Article{Hashemi2012,
author="Hashemi, Amir
and Dehghani Darmian, Mahdi
and M.-Alizadeh, Benyamin",
title="Applying Buchberger's criteria on Montes's DisPGB algorithm",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="715-724",
abstract="The concept of comprehensive Grobner bases was introduced by Weispfenning. Montes has proposed an efficient algorithm for computing these bases. But he has not explicitly used Buchberger's criteria in his algorithm. In this paper we prove that we can apply these criteria on Montes algorithm. We propose a modified version of Montes algorithm and evaluate its performance via some examples.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_236.html"
}
@Article{Ghaffari2012,
author="Ghaffari, Ali
and Alinejad, Ahmad",
title="\varphi-amenability of Banach algebras",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="725-738",
abstract="Let $A$ be an arbitrary Banach algebra and $varphi$ a homomorphism from $A$ onto $Bbb C$. Our first purpose in this paper is to give some equivalent conditions under which guarantees a $varphi$-mean of norm one. Then we find some conditions under which there exists a $varphi$-mean in the weak$^*$ cluster of ${ain A; |a|=varphi(a)=1}$ in $A^{**}$.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_237.html"
}
@Article{Doha2012,
author="Doha, Eid
and Abd-Elhameed, Waleed Mohammed
and Ahmed, Hany",
title="The coefficients of differentiated expansions of double and triple Jacobi polynomials",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="739-765",
abstract="Formulae expressing explicitly the coefficients of an expansion of double Jacobi polynomials which has been partially differentiated an arbitrary number of times with respect to its variables in terms of the coefficients of the original expansion are stated and proved. Extension to expansion of triple Jacobi polynomials is given. The results for the special cases of double and triple ultraspherical polynomials are considered. Also the results for Chebyshev polynomials of the first, second, third and fourth kinds and of Legendre polynomials are noted. An application of how to use double Jacobi polynomials for solving Poisson’s equation in two variables subject to nonhomogeneous mixed boundary conditions is described.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_238.html"
}
@Article{Mahdavi-Amiri2012,
author="Mahdavi-Amiri, N.
and Ansari, Mohammad Reza",
title="Superlinearly convergent exact penalty projected structured Hessian updating schemes for constrained nonlinear least squares: asymptotic analysis",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="767-786",
abstract="We present a structured algorithm for solving constrained nonlinear least squares problems, and establish its local two-step Q-superlinear convergence. The approach is based on an adaptive structured scheme due to Mahdavi-Amiri and Bartels of the exact penalty method of Coleman and Conn for nonlinearly constrained optimization problems. The structured adaptation also makes use of the ideas of Nocedal and Overton for handling the quasi-Newton updates of projected Hessians. We discuss the comparative results of the testing of our programs and three nonlinear programming codes from KNITRO on some randomly generated test problems due to Bartels and Mahdavi-Amiri. The results indeed confirm the practical significance of our special considerations for the inherent structure of the least squares.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_240.html"
}
@Article{Zangiabadi2012,
author="Zangiabadi, Maryam
and Mansouri, Hossein",
title="Improved infeasible-interior-point algorithm for linear complementarity problems",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="787-803",
abstract="We present a modified version of the infeasible-interior- We present a modified version of the infeasible-interior-point algorithm for monotone linear complementary problems introduced by Mansouri et al. (Nonlinear Anal. Real World Appl. 12(2011) 545--561). Each main step of the algorithm consists of a feasibility step and several centering steps. We use a different feasibility step, which targets at the $mu^+$-center. It results a better iteration bound.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_241.html"
}
@Article{Demirel2012,
author="Demirel, Oğuzhan
and Soyturk Seyrantepe, Emine
and Sonmez, N.",
title="Metric and periodic lines in the Poincare ball model of hyperbolic geometry",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="805-815",
abstract="In this paper, we prove that every metric line in the Poincare ball model of hyperbolic geometry is exactly a classical line of itself. We also proved nonexistence of periodic lines in the Poincare ball model of hyperbolic geometry.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_242.html"
}
@Article{Jabbarzadeh2012,
author="Jabbarzadeh, Mohammad Reza
and Emamalipour, Hossain",
title="Compact weighted Frobenius-Perron operators and their spectra",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="817-826",
abstract="In this note we characterize the compact weighted Frobenius-Perron operator $p$ on $L^1(Sigma)$ and determine their spectra. We also show that every weakly compact weighted Frobenius-Perron operator on $L^1(Sigma)$ is compact.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_243.html"
}
@Article{Dragomir2012,
author="Dragomir, Silvestru Sever",
title="Error bounds in approximating n-time differentiable functions of self-adjoint operators in Hilbert spaces via a Taylor's type expansion",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="827-842",
abstract="On utilizing the spectral representation of selfadjoint operators in Hilbert spaces, some error bounds in approximating $n$-time differentiable functions of selfadjoint operators in Hilbert Spaces via a Taylor's type expansion are given.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_245.html"
}
@Article{Amini2012,
author="Amini, Mohammad
and Nili Sani, Hamid Reza
and Bozorgnia, Abolghasem",
title="Complete convergence of moving-average processes under negative
dependence sub-Gaussian assumptions",
journal="Bulletin of the Iranian Mathematical Society",
year="2012",
volume="38",
number="3",
pages="843-852",
abstract="The complete convergence is investigated for moving-average processes of doubly infinite sequence of negative dependence sub-gaussian random variables with zero means, finite variances and absolutely summable coefficients. As a corollary, the rate of complete convergence is obtained under some suitable conditions on the coefficients.",
issn="1017-060X",
doi="",
url="http://bims.iranjournals.ir/article_247.html"
}