Equivalence of multi-norms

Dales, H.G. and Daws, M. and Pham, H. L. and Ramsden, P. (2014) Equivalence of multi-norms. Dissertationes Mathematicae (Rozprawy Matematyczne), 498. pp. 1-53. ISSN 0012-3862

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The theory of multi-norms was developed by H. G. Dales and M. E. Polyakov in a memoir that was published in Dissertationes Mathematicae. In that memoir, the notion of ‘equivalence’ of multi-norms was defined. In the present memoir, we make a systematic study of when various pairs of multi-norms are mutually equivalent. In particular, we study when (p, q)-multi-norms defined on spaces Lr (Ω) are equivalent, resolving most cases; we have stronger results in the case where r = 2. We also show that the standard [t]-multi-norm defined on Lr (Ω) is not equivalent to a (p, q)-multi-norm in most cases, leaving some cases open. We discuss the equivalence of the Hilbert space multi-norm, the (p, q)-multi-norm, and the maximum multi-norm based on a Hilbert space. We calculate the value of some constants that arise. Several results depend on the classical theory of (q, p)-summing operators.

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Journal Article
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Dissertationes Mathematicae (Rozprawy Matematyczne)
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15 Nov 2013 11:30
Last Modified:
16 Sep 2023 01:01