6. Ladyzhenskaya-Vorlesung Leipzig
Dusa McDuff
(Barnard College, Columbia University)
Symplectic embeddings and continued fractions
am 30. Juni 2010, 16 Uhr c.t., Felix Klein Hörsaal, Mathematisches Institut, Johannisgasse 26, 04103 Leipzig
Kaffee um 15.45 Uhr im Raum I-40
Plakat
ABSTRACT: As shown by Gromov's nonsqueezing theorem, symplectic embedding problems lie at the heart of symplectic topology. The four dimensional problem is rather different from that in higher dimensions. Recently it has become possible to specify exactly when a four dimensional ellipsoid embeds in a ball. The talk explains recent joint work with Schlenk on this question, exploring its unexpected connections to continued fractions, Fibonacci numbers and lattice packing problems.
Organisatoren: Profilbildender Forschungsbereich Mathematik in den Naturwissenschaften der
Universität Leipzig und Max-Planck-Institut für Mathematik in den Naturwissenschaften |