Polynômes de degré minimum connectant deux projections dans une algèbre de Banach. (Polynomials of minimal degree connecting two projections in a Banach algebra) (Q1822014)
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scientific article; zbMATH DE number 4000760
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Polynômes de degré minimum connectant deux projections dans une algèbre de Banach. (Polynomials of minimal degree connecting two projections in a Banach algebra) |
scientific article; zbMATH DE number 4000760 |
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Polynômes de degré minimum connectant deux projections dans une algèbre de Banach. (Polynomials of minimal degree connecting two projections in a Banach algebra) (English)
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1985
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Two similar idempotents in a Banach algebra, whose difference is invertible, can be connected within the set of idempotents by a polynomial of degree at most 3. For matrix algebras the assumption on the difference can be dropped.
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similar idempotents in a Banach algebra
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matrix algebras
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