Multiplicatively invariant subspaces of Besov spaces

Nilsson, Per

doi:10.1090/S0002-9947-1981-0610964-1

Multiplicatively invariant subspaces of Besov spaces
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by Per Nilsson

Trans. Amer. Math. Soc. 265 (1981), 535-543

DOI: https://doi.org/10.1090/S0002-9947-1981-0610964-1

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Abstract:

We study subspaces of Besov spaces $B_p^{s,q}$ which are invariant under pointwise multiplication by characters. The case $s > 0$ is completely described, and for the case $s \leqslant 0$ we extend known results.

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