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New conditions for
subnormality
Tavan Thomas Trent |
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Vol. 93 (1981), No. 2, 459–464
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Abstract |
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The purpose of this paper is to establish some new characterizations of subnormality. One of these characterizations is interesting, in that the conditions are applied to “one vector at a time”. This type of criterion is applied to show that verifying subnormality can be reduced to considering the restrictions of the operator to its cyclic invariant subspaces. |
Mathematical Subject Classification 2000
Primary: 47B20
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Milestones
Received: 2 January 1980
Published: 1 April 1981
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Authors |
| Tavan Thomas Trent | |
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