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On inequivalences of sequences of characters

Volume 257 / 2021

Tom Sanders Studia Mathematica 257 (2021), 241-252 MSC: Primary 42C10; Secondary 42A65. DOI: 10.4064/sm190110-24-9 Published online: 11 December 2020

Abstract

We establish various results including the following: if $1 \lt p \lt \infty $ is not equal to $2$ and $\sigma $ is a bijection between the trigonometric functions on $[0,1)$ and the Walsh functions on $[0,1)$, then $\sigma $ does not extend to an isomorphism $L_p[0,1) \rightarrow L_p[0,1)$.

Authors

  • Tom SandersMathematical Institute
    University of Oxford
    Radcliffe Observatory Quarter
    Woodstock Road
    Oxford OX2 6GG
    United Kingdom
    e-mail

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