119 citations
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Showing 2005 · math.FAShow all
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math.FA2005★ 1 cited
Necessary and sufficient condition for compactness of the embedding operator
A. G. Ramm
An improvement of the author's result, proved in 1961, concerning necessary and sufficient conditions for the compactness of an imbedding operator is given.
math.FA2005
The Fredholm index of a pair of commuting operators
Xiang Fang
This paper concerns Fredholm theory in several variables, and its applications to Hilbert spaces of analytic functions. One feature is the introduction of ideas from commutative al…