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Sub-solutions and mean-value operators for ultraparabolic equations on Lie groups
2007
Mathematica Scandinavica
Preserved Fulltext
The aim of this paper is to provide a theory of sub-solutions for a class of hypoelliptic ultraparabolic operators $\mathcal L$, by using mean-value operators on the level sets of the fundamental solution of $\mathcal L$.
doi:10.7146/math.scand.a-15033
fatcat:omzlvtqwzjcjtkoh7xmkr35la4