Uniqueness of extensions of homogeneous polynomials on c0-sum of Hilbert spaces |
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Authors: | ML Loureno L Pellegrini |
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Institution: | aDepartamento de Matemática, Universidade de São Paulo, CP 66281, CEP: 05315-970 São Paulo, Brazil |
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Abstract: | We study the uniqueness of norm-preserving extension of n-homogeneous polynomials on X, where X is a c0-sum of Hilbert spaces. We show that there exists a unique norm-preserving extension for norm-attaining 2-homogeneous polynomials on X to X″, but this result fails for homogeneous polynomials of degree greater than 2. |
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Keywords: | 46G25 |
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