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created Jan 31 at 21:13
created Jan 31 at 16:48
the geometry of spaces that are locally (infinitesimally, tangentially) like coset spaces G/H, i.e. like Klein geometries. Intuitively, Cartan geometry studies the geometry of a man…
created Jan 28 at 23:39
created Jan 12 at 10:52
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an axiomatic formulation of differential geometry in smooth toposes. The axioms ensure that a well-defined notion of infinitesimal spaces exists in the topos, whose …
created Jan 5 at 22:06