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Questions
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Why are spectra indexed over the natural numbers?

sep 9 10 at 8:54 roger123 1,662●5●19

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Internal hom of sheaves

may 14 10 at 16:19 Urs Schreiber 6,478●13●21

 
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Question on an exercise in Hartshorne: Equivalence of categories

mar 23 10 at 13:21 Charles Siegel 10.8k●2●31●81

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Closure of the homotopy relation for a simplicial set

jun 27 10 at 3:26 Tom Goodwillie 26.8k●2●60●110

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Question on the interpretation of a presheaf category as a co-completion

mar 25 11 at 1:41 Todd Trimble 22.3k●1●63●96

 
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Distributivity / commutativity of pushouts and pullbacks

nov 18 10 at 9:23 Martin Brandenburg 29.1k●2●46●130

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Is there a map of spectra implementing the inverse of the Thom isomorphism?

aug 26 11 at 9:01 Johannes Ebert 11.5k●33●56

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The functor of continuous functions from compact CW-spaces to the reals

oct 28 10 at 15:55 Dmitri Pavlov 7,068●1●13●44

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