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Questions
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Why are tensors a generalization of scalars, vectors, and matrices?

may 9 at 15:37 Trevor 1

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How should one think about sheafification and the difference between a sheaf and a presheaf

nov 9 10 at 16:36 roy smith 4,971●36●29

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Why do finite homotopy groups imply finite homology groups?

dec 21 09 at 3:54 Allen Hatcher 7,169●2●26●35

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Wikipedia’s definition of ‘locally free sheaf’

oct 12 11 at 11:49 Abraham Tekle 1

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Galois theory and rational points on elliptic curves

jan 2 10 at 3:50 Anweshi 4,236●2●25●56

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Why does homotopy behave well with respect to fibrations and homology with respect to cofibrations?

feb 24 11 at 23:00 Matthew Ando 266●1●3

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Galois group of a product of polynomials

mar 27 10 at 17:00 Charles Stewart 1,669●8●15

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954
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Why must one sheafify quotients of sheaves?

mar 23 10 at 19:30 Georges Elencwajg 24.3k●65●132

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What determines a model structure?

jun 27 10 at 18:17 roger123 1,662●5●19

 
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K-theory as a generalized cohomology theory

mar 17 10 at 19:02 Steve Huntsman 8,139●1●22●56

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