The “hard direction” of the Giroux correspondence states that any two open books representing the same contact structure are related…
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Non-local functionals converging to Sobolev and BV norms – Nicola Picenni (Scuola Normale Superiore di Pisa)
During the last twenty years, inspired by the famous “BBM formula”, many non-local characterizations of Sobolev and BV spaces have…