Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Equivalence of multi-norms
AU - Dales, H.G.
AU - Daws, M.
AU - Pham, H. L.
AU - Ramsden, P.
PY - 2014/1
Y1 - 2014/1
N2 - 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 ofsome constants that arise.Several results depend on the classical theory of (q, p)-summing operators.
AB - 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 ofsome constants that arise.Several results depend on the classical theory of (q, p)-summing operators.
U2 - 10.4064/dm498-0-1
DO - 10.4064/dm498-0-1
M3 - Journal article
VL - 498
SP - 1
EP - 53
JO - Dissertationes Mathematicae (Rozprawy Matematyczne)
JF - Dissertationes Mathematicae (Rozprawy Matematyczne)
SN - 0012-3862
ER -