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When is a submersion locally volume-expanding?

sep 27 at 7:47 Alberto Abbondandolo 697●3●10

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Existence of a large leaf in a foliation of the ball

may 26 at 5:09 Vitali Kapovitch 4,082●1●11●22

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What is the canonical isomorphism between the tensor products of the top exterior powers associated to exact sequences of vector spaces?

apr 29 12 at 1:51 Liviu Nicolaescu 11.3k●1●20●33