Symplectic embeddings and continued fractions: a survey.
Tue, 09/01/2009 - 12:47 — SomNambul
link: http://arxiv.org/abs/0908.4387
Abstract
Abstract
As has been known since the time of Gromov's Nonsqueezing Theorem, symplectic
embedding questions lie at the heart of symplectic geometry. After surveying
some of the most important ways of measuring the size of a symplectic set,
these notes discuss some recent developments concerning the question of when a
4-dimensional ellipsoid can be symplectically embedded in a ball. This problem
turns out to have unexpected relations to the properties of continued fractions
and of exceptional curves in blow ups of the complex projective plane. It is
also related to questions of lattice packing of planar triangles.
User login
Loading
QQQ
Sat, 03/26/2011 - 14:10 — QQQI'd been obsessed with my free porn videos younger sister's sex life for almost two years when I finally found the courage and mobile porn the means to take a part in it. In fact, my obsession had probably been developing for quite some time before that without my noticing it free porn tube, my teenage unconscious taking in the form of her developing body, her budding breasts, her pheromones and whatnot since the onset of her puber
ABB728019395