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37.344  Articles
1 of 3.735 pages  |  10  records  |  more records»
In this work, we introduce the concepts of compactly invariant and uniformly invariant. Also we define sometimes C-invariant closed subspaces and then prove every m-dimensional normed space with m > 1 has a nontrivial sometimes C-invariant closed subsp... see more

We give a direct proof of sandwich-type theorems for linear invariant partially ordered vector space operators in the setting of convexity. As consequences, we deduce equivalence results between sandwich, Hahn-Banach, separation and Krein-type extension t... see more

It is shown that, on the one hand, quantum moment maps give rise to examples for the operator-theoretic approach to invariant integration theory developed by K.-D. Kürsten and the second author, and that, on the other hand, the operator-theoretic approach... see more

The military and commercial exploitation of outer space has received increasing international attention since the United States of America announced its intention to establish an outer space military force to protect its interests in outer space. Simultan... see more

This study estimates the performance of a free space optical system (FSO) affected by air pollutants from oil fires. Simulations are performed to evaluate the reliability of optical propagation according to the length of the FSO channels under two beam an... see more

In this paper the investigation of n-H-closed spaces that was started by Basile et al. (2019) is continued for every n ? ?, n = 2. In particular, starting with the relationship between the absolute space PX of an arbitrary topological space X, reported by... see more

In this article, first the “paradox of assimilation and difference” and its consequences will be discussed in  the film A Girl Walks Home Alone at Night by Ana Lily Amirpour who is an immigrant Iranian-American director. The aim is to show how her sh... see more

Banach space operators acting on some fixed space X are considered. If two such operators A and B verify the condition A2=B2 and if A has nontrivial hyperinvariant subspaces, then B has nontrivial invariant subspaces. If A and B commute and satisfy a spec... see more

An approach to wideband beamformer with frequency invariant property is proposed by optimising the space-time two-dimensional finite impulse response (FIR) filters. Frequency invariant beam pattern brings some restrictions on frequency bandwith and filter... see more

1 of 3.735 pages  |  10  records  |  more records»