نتایج جستجو برای: banach module
تعداد نتایج: 82250 فیلتر نتایج به سال:
معادلات تابعی معادلاتی هستند که مجهول در آن ها به شکل تابع است. مشهورترین معادلات تابعی معادله تابعی کشی یعنی f(x+y)=f(x)+f(y) است که یکی از توابع صادق در این معادله f(x)=x است. هم چنین معادله تابعی مربعی f(x+y)+f(x-y)=2f(x)+2f(y) که یکی از جواب های آن تابع مربعی f(x)=x^2 است. سوال مهمی که در این جا مطرح است این است که، اگر تابعی تقریبا در یک معادله تابعی صدق کند، آیا به یک جواب آن معادله تابعی...
Let X be a compact Hausdorff space, E be a normed space, A(X,E) be a regular Banach function algebra on X , and A(X,E) be a subspace of C(X,E) . In this paper, first we introduce the notion of localness of an additive map S:A(X,E) → C(X,E) with respect to additive maps T1,...,Tn: A(X) → C(X) and then we characterize the general form of such maps for a certain class of subspaces A(X,E) of C(...
throughout this dissertation r is a commutative ring with identity and m is a unitary r-module. in this dissertation we investigate submodules of multiplication , prufer and dedekind modules. we also stat the equivalent conditions for which is ring , wher l is a submodule of afaithful multiplication prufer module. we introduce the concept of integrally closed modules and show that faithful mu...
The injective tensor product of normal representable bimodules over von Neumann algebras is shown to be normal. The usual Banach module projective tensor product of central representable bimodules over an Abelian C∗-algebra is shown to be representable. A normal version of the projective tensor product is introduced for central normal bimodules.
Let G be a locally compact group, and take p ∈ (1,∞). We prove that the Banach left L(G)module L(G) is injective (if and) only if the group G is amenable. Our proof uses the notion of multi-norms. We also develop the theory of multi-normed spaces.
In this paper we investigate some properties of φ−multipliers on Banach algebras. We also consider φ−multipliers in the general topological module setting. We discuss the φ−strict and φ−uniform topologies on Mφ(A). Mathematics Subject Classification: 47B48,47C05, 46H05, 46H25
Abstract We introduce a notion of topologically flat locally convex module, which extends the Banach module and is well adapted to nonmetrizable setting (and especially DF-modules). Using this notion, we amenable algebras show that complete barrelled DF-algebra if only it Johnson amenable, extending thereby Helemskii–Sheinberg’s criterion for algebras. As an application, completely characterize...
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