نتایج جستجو برای: $g$-inverse
تعداد نتایج: 526966 فیلتر نتایج به سال:
Let complex matrices $A$ and $B$ have the same sizes. Using the singular value decomposition, we characterize the $g$-inverse $B^{(1)}$ of $B$ such that the distance between a given $g$-inverse of $A$ and the set of all $g$-inverses of the matrix $B$ reaches minimum under the unitarily invariant norm. With this result, we derive additive and multiplicative perturbation bounds of the nearest per...
we prove that the class of profinite groups $g$ that have a factorization $g=ab$ with $a$ and $b$ abelian closed subgroups, is closed under taking inverse limits of surjective inverse systems. this is a generalization of a recent result by k. h. hofmann and f. g. russo. as an application we reprove their generalization of iwasawa's structure theorem for quasihamiltonian pro-$p$...
در این پایان نامه مباحثی در مورد نیم گروه های معکوس توپولوژیکی اولیه (مطلقا) h-بسته و فشرده (شمارایی) بدست می آوریم و ساختار نیم گروه های معکوس توپولوژی فشرده شمارایی و نیم گروه های معکوس توپولوژی همنهشت-آزاد را توصیف می کنیم و نشان می دهیم که نیم گروه دو دوری نمی تواند در نیم گروه معکوس توپولوژی فشرده شمارایی نشانده شود. we present some discussions about compact (countably) and (absolutely) h...
Note that the above definition introduces the identity e as a left identity (i.e., the identity multiplies a group element on the left). Similarly, the inverse of group element gi was defined as a left inverse, where the inverse element multiplies the group element on the left. The group definition can be used to show that e is also a right identity (i.e., e ∗ g = g ∗ e = g) and g−1 is a right ...
Given an undirected network G(V,A,c) and a perfect matching M of G, the inverse maximum perfect matching problem consists of modifying minimally the elements of c so that M becomes a maximum perfect matching with respect to the modified vector. In this article, we consider the inverse problem when the modifications are measured by the weighted bottleneck-type Hamming distance. We propose an alg...
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