New weighted L^p spaces are defined via weight function matrices with inclusion relations characterized by matrix comparisons; a counterexample distinguishes Beurling-Björck from Braun-Meise-Taylor ultradifferentiable settings.
On the equivalence between moderate growth-type conditions in the weight matrix setting II
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abstract
We continue the study of the known equivalent reformulations of the classical moderate growth condition for weight sequences in the mixed setting; i.e. when dealing with two different sequences. This approach is becoming crucial in the weight matrix setting and also, in particular, when dealing with weight functions in the sense of Braun-Meise-Taylor. It is known that a full generalization to the mixed setting fails, more precisely the condition comparing the growth of the corresponding sequences of quotients and roots is not clear. In the main result we prove a new characterization of this property in terms of the associated weight function; i.e. when the given weight function is based on a weight sequence.
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2025 1verdicts
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On inclusion relations of weighted $L^p$-type spaces defined in terms of weight function matrices
New weighted L^p spaces are defined via weight function matrices with inclusion relations characterized by matrix comparisons; a counterexample distinguishes Beurling-Björck from Braun-Meise-Taylor ultradifferentiable settings.