An Invitation to Hypoelliptic Operators and Hörmander's by Marco Bramanti
By Marco Bramanti
Hörmander's operators are a massive category of linear elliptic-parabolic degenerate partial differential operators with gentle coefficients, which were intensively studied because the past due Nineteen Sixties and are nonetheless an lively box of study. this article presents the reader with a normal evaluate of the sector, with its motivations and difficulties, a few of its primary effects, and a few fresh traces of development.
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