Multivariable spectral multipliers and quasielliptic operators

Adam Sikora

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arXiv · 0807.4348

Multivariable spectral multipliers and quasielliptic operators

Adam Sikora

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Abstract

We study multivariable spectral multipliers $F(L_1,L_2)$ acting on Cartesian product of ambient spaces of two self-adjoint operators $L_1$ and $L_2$. We prove that if $F$ satisfies Hörmander type differentiability condition then the operator $F(L_1,L_2)$ is of Calderón-Zygmund type. We apply obtained results to the analysis of quasielliptic operators acting on product of some fractal spaces. The existence and surprising properties of quasielliptic operators have been recently observed in works of Bockelman, Drenning and Strichartz. This paper demonstrates that Riesz type operators corresponding to quasielliptic operators are continuous on $L^p$ spaces.

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Adam Sikora. 2008-07-28. Multivariable spectral multipliers and quasielliptic operators. https://arxiv.org/abs/0807.4348

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