Compact Operators for Almost Conservative and Strongly Conservative Matrices
نویسندگان
چکیده
منابع مشابه
A class of ℐ-conservative matrices
Let ∞ and c be the Banach spaces of bounded and convergent sequence x = (xk) with the usual supremum norm. Let σ be a one-to-one mapping of N, the set of positive integers, into itself and T : ∞ → ∞ a linear operator defined by Tx = (Txk)= (xσ(k)). An element φ ∈ ′ ∞, the conjugate space of ∞, is called an invariant mean or a σ-mean if and only if (i) φ(x) ≥ 0 when the sequence x = (xk) has xk ...
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ژورنال
عنوان ژورنال: Abstract and Applied Analysis
سال: 2014
ISSN: 1085-3375,1687-0409
DOI: 10.1155/2014/567317