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The following pages link to On hypoellipticity of the operator \(\exp[-|x_1|^{-\sigma}]D_1^2+x_1^4D_2^2+1\) (Q1607967):
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The following pages link to On hypoellipticity of the operator \(\exp[-|x_1|^{-\sigma}]D_1^2+x_1^4D_2^2+1\) (Q1607967):
Displaying 1 item.