2 problems

Hypoellipticity and invertibility of the Vladimirov sub-Laplacian
Vladimirov sub-Laplacian conjecture. The Vladimirov sub-Laplacian of order $\alpha>0$ is a hypoelliptic operator on $G$ and is invertible on the space of mean-zero functions.
openFrom papersnilpotent-lie-groups p-adic-analysis pseudo-differential-operators
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8
The $L^2$ -boundedness conjecture for Grushin pseudo-multipliers
Let $G$ be the Grushin operator, let $\boldsymbol{L}$ and $\boldsymbol{U}$ denote the associated operator-valued spectral variables, and let…
openFrom papersgrushin-operators harmonic-analysis pseudo-differential-operators
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7

Hypoellipticity and invertibility of the Vladimirov sub-Laplacian