Abstract
Let A be a completely continuous operator acting on the Banach space, let be the complete system of its eigenvalues (with regard for multiplicity) and let be the distance from A to the set of all operators of range dimension not greater than n. If then, where sp(A) is a functional which is linear on the set of operators satisfying condition (1) (and continuous in a certain topology) and which coincides with its trace for finite-dimensional A. The proof of this theorem is based on certain analogs of the famous Weyl inequalities.
Original language | English |
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Pages (from-to) | 299-312 |
Number of pages | 14 |
Journal | Mathematics of the USSR - Sbornik |
Volume | 15 |
Issue number | 2 |
DOIs | |
State | Published - 28 Feb 1971 |
ASJC Scopus subject areas
- Mathematics (all)