مرور Volume 40, Issue 2 بر اساس عنوان

در حال نمایش موارد 1 - 14 از 14

  • Approximating fixed points of nonexpansive mappings and solving systems of variational inequalities 

    Piri, Hossein (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    ‎A new approximation method for the set of common fixed points of‎ ‎nonexpansive mappings and the set of solutions of systems of‎ ‎variational inequalities is introduced and studied‎. ‎Moreover‎, ‎we‎ ‎apply our main result ...

  • Bilateral composition operators on vector-valued Hardy spaces 

    Rezaei, Hamid (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    Let $T$ be a bounded operator on the Banach space $X$ and $ph$ be an analytic self-map of the unit disk $Bbb{D}$‎. ‎We investigate some operator theoretic properties of‎ ‎bilateral composition operator $C_{ph‎, ‎T}‎: ‎f ...

  • Bulletin of the Iranian Mathematical Society 

    پدیدآور نامشخص (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)

  • A characterization of the symmetric group of prime degree 

    Zhang, Qingliang؛ Wang, Jinhua؛ Liu, Weijun (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    Let $G$ be a finite group and $Gamma(G)$ the prime graph of $G$‎. ‎Recently people have been using prime graphs to study simple groups‎. ‎Naturally we pose a question‎: ‎can we use prime graphs to study almost‎ ‎simple ...

  • ‎Finite iterative methods for solving systems of linear matrix equations over reflexive and anti-reflexive matrices 

    Dehghan, Mehdi؛ Hajarian, Masoud (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    A matrix $Pintextmd{C}^{ntimes n}$ is called a generalized reflection matrix if $P^{H}=P$ and $P^{2}=I$‎. ‎An $ntimes n$‎ ‎complex matrix $A$ is said to be a reflexive (anti-reflexive) matrix with respect to the generalized ...

  • Gorenstein global dimensions for Hopf algebra actions 

    Pan, Qunxing؛ Cai, Faqun (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    Let $H$ be a Hopf algebra and $A$ an $H$-bimodule algebra‎. ‎In this paper‎, ‎we investigate Gorenstein global dimensions for Hopf‎ ‎algebras and twisted smash product algebras $Astar H$‎. ‎Results from‎ ‎the literature ...

  • A graphical difference between the inverse and regular semigroups 

    Gharibkhajeh, Ayoub؛ Doostie, Hossein (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    In this paper we investigate the Green‎ ‎graphs for the regular and inverse semigroups by considering the‎ ‎Green classes of them‎. ‎And by using the properties of these‎ ‎semigroups‎, ‎we prove that all of the five Green ...

  • Improvements of two preconditioned AOR iterative methods for Z-matrices 

    Hasani, Mohsen؛ Khojasteh Salkuyeh, Davod (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    ‎In this paper‎, ‎we propose two preconditioned AOR iterative methods to solve systems of linear equations whose coefficient matrices are Z-matrix‎. ‎These methods can be considered as improvements of two previously presented ...

  • $(m,n)$-algebraically compactness and $(m,n)$-pure injectivity 

    Behboodi, Mahmood؛ Ghorbani, Atefeh؛ Shojaee, Seyed Hossein (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    In this paper‎, ‎we introduce the notion of $(m,n)$-‎algebr‎aically compact modules as an analogue of algebraically‎ ‎compact modules and then we show that $(m,n)$-algebraically‎ ‎compactness‎ ‎and $(m,n)$-pure injectivity ...

  • On $I$-statistical and $I$-lacunary statistical convergence of order $alpha$ 

    Das, Pratulananda؛ Savas, Ekrem (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    In this paper‎, ‎following a very recent‎ ‎and new approach‎, ‎we further generalize recently introduced‎ ‎summability methods‎, ‎namely‎, ‎$I$-statistical convergence and‎ ‎$I$-lacunary statistical convergence (which ...

  • On generalisations of almost prime and weakly prime ideals 

    Ebrahimpour, Mahdieh (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    Let $R$ be a commutative ring with identity‎. ‎A proper ideal $P$ of $R$ is a $(n-1,n)$-$Phi_m$-prime ($(n-1,n)$-weakly prime) ideal if $a_1,ldots,a_nin R$‎, ‎$a_1cdots a_nin Pbackslash P^m$ ($a_1cdots a_nin Pbackslash ...

  • On the decomposable numerical range of operators 

    Zamani, Yousef؛ Ahsani, Sima (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    ‎Let $V$ be an $n$-dimensional complex inner product space‎. ‎Suppose‎ ‎$H$ is a subgroup of the symmetric group of degree $m$‎, ‎and‎ ‎$chi‎ :‎Hrightarrow mathbb{C} $ is an irreducible character (not‎ ‎necessarily linear)‎. ...

  • Weak Banach-Saks property in the space of compact operators 

    Moosavi, B. Khadijeh؛ Moshtaghioun, S. Mohammad (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    For suitable Banach spaces $X$ and $Y$ with Schauder decompositions and‎ ‎a suitable closed subspace $mathcal{M}$ of some compact operator space from $X$ to $Y$‎, ‎it is shown that the strong Banach-Saks-ness of all ...

  • WZ factorization via Aba y-Broyden-Spedicato algorithms 

    Golpar-Raboky, Effat؛ Mahdavi-Amiri, N. (Springer and the Iranian Mathematical Society (IMS), 2014-04-01)
    Classes of‎ ‎Abaffy-Broyden-Spedicato (ABS) methods have been introduced for‎ ‎solving linear systems of equations‎. ‎The algorithms are powerful methods for developing matrix‎ ‎factorizations and many fundamental numerical ...