Mathematics – Symplectic Geometry
Scientific paper
2009-11-20
Mathematics
Symplectic Geometry
16 pages, for proceedings of Geometry Summer School, Lisbon, July 2009
Scientific paper
Quantization problems suggest that the category of symplectic manifolds and symplectomorphisms be augmented by the inclusion of canonical relations as morphisms. These relations compose well when a transversality condition is satisfied, but the failure of the most general compositions to be smooth manifolds means that the canonical relations do not comprise the morphisms of a category. We discuss several existing and potential remedies to the nontransversality problem. Some of these involve restriction to classes of lagrangian submanifolds for which the transversality property automatically holds. Others involve allowing lagrangian "objects" more general than submanifolds.
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