The order of neutrality for linear opera
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P. Lancaster; A.S. Markus; P. Zizler
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Article
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1997
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Elsevier Science
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English
⚖ 290 KB
Let A be a symmetric linear operator defined on all of a (possibly degenerate) indefinite inner product space &4 Let JV be the set of all subspaces of 2 which are A-invariant, neutral (in the sense of the indefinite scalar product), and finite dimensional. It is shown that members of JV which are ma