Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Hossein, SK. Monowar"'
Autor:
Pakhira, Samik, Hossein, Sk Monowar
Publikováno v:
In Journal of Computational and Applied Mathematics February 2024 437
In this article we present several necessary and sufficient conditions for the existence of Hermitian positive definite solutions of nonlinear matrix equations of the form $X^s + A^*X^{-t}A + B^*X^{-p}B = Q$, where $ s, t, p \geq 1$, $ A, B$ are nons
Externí odkaz:
http://arxiv.org/abs/1907.08408
Publikováno v:
Advances in Operator Theory, 2017
In this paper we characterize $\sqrt{2}$-1-uniform $J$-Parseval fusion frames in a Krein space $\mathbb{K}$. We provide a few results regarding construction of new $J$-tight fusion frame from given $J$-tight fusion frames. We also characterize any un
Externí odkaz:
http://arxiv.org/abs/1612.00431
Let $\{f_n:n\in\mathbb{N}\}$ be a $J$-frame for a Krein space ${\textbf{\textit{K}}}$ and $P_M$ be a $J$-orthogonal projection from ${\textbf{\textit{K}}}$ onto a subspace $M$. In this article we find sufficient conditions under which $\{P_M(f_n):n\i
Externí odkaz:
http://arxiv.org/abs/1609.08658
Publikováno v:
IJMA, Vol.10, 2016, no.19, 917-931
Motivated by the idea of $J$-frame for a Krein space $\textbf{\textit{K}}$, introduced by Giribet \textit{et al.} (J. I. Giribet, A. Maestripieri, F. Mart\'inez Per\'{i}a, P. G. Massey, \textit{On frames for Krein spaces}, J. Math. Anal. Appl. (1), {
Externí odkaz:
http://arxiv.org/abs/1609.08659
The inner structure of neutron star is considered from theoretical point of view and is compared with the observed data. We have proposed a form of an equation of state relating pressure with matter density which indicates the stiff equation of state
Externí odkaz:
http://arxiv.org/abs/1510.07015
We present a model for compact stars in the low mass X-ray binaries(LMXBs) and X-ray pulsars using a metric given by John J. Matese and Patrick G. Whitman \citep{Matese and Whitman1980}. Here the field equations are reduced to a system of two algebra
Externí odkaz:
http://arxiv.org/abs/1410.0199
We propose a model for compact stars in low-mass X-ray binaries(LMXBs) namely KS 1731-260, EXO 1745-248 and 4U 1608-52. Here we investigate the physical phenomena of a compact star in the LMXBs. Using our model, we have calculated central density, su
Externí odkaz:
http://arxiv.org/abs/1408.2412
In this article we define frame for a Krein space K with a J-orthonormal basis and extend the notion of frame sequence and frame potential analogous to Hilbert spaces.We show that every frame is a sum of three orthonormal bases of a Krein space. We a
Externí odkaz:
http://arxiv.org/abs/1406.6205
Autor:
Bose, Snehasish, Hossein, Sk Monowar
In this article, we present some fixed point theorems in partially ordered G-metric space using the concept of $(\psi,\phi)$- weak contraction which extend many existing fixed point theorems in such space. We also give some examples to show that if w
Externí odkaz:
http://arxiv.org/abs/1403.1935