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Aug
10
awarded  Popular Question
Jan
31
comment Involutive Properties of Space-structures on Smooth Manifolds
Interesting, do you have a recommendation for a reference that covers the topic in a similar rigor but restricted to oriented cobordisms between smooth manifold?
Jan
31
asked Involutive Properties of Space-structures on Smooth Manifolds
Nov
3
comment Union of Cartesian products: $X \times (Y \cup Z)= (X \times Y) \cup(X\times Z)$
Usually it is best to think about this element wise!
Mar
29
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30
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Nov
14
asked Poincaré Duality with de Rham Cohomology
Aug
16
comment Publication Quality Mathematics Diagrams
oh! how nice! Although it seems to be the dreaded metapost! :P
Aug
16
awarded  Nice Question
Aug
16
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16
asked Publication Quality Mathematics Diagrams
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26
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25
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Jun
25
revised The prime decomposition of 3-manifold
added 182 characters in body; deleted 2 characters in body
Jun
25
answered The prime decomposition of 3-manifold