11

Questions
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350
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If $X$ is a simplicial complex, is their a characterization of the links of the vertices of $X$ that is equivalent to the statement "$|X|$ is a manifold

dec 22 at 1:02 Agol 23.9k●1●33●84

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227
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Does each “prod-simplicial” regular cell complex come from a unique rooted tree?

nov 16 at 7:24 Spice the Bird 940●3●14

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473
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What is the homotopy type of the space of the homeomorphisms of the n-ball such that the homeomorphism restricted to the boundary is isotopic to the identity?

nov 10 at 4:06 Spice the Bird 940●3●14

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10
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781
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Is the following invariant of rooted trees a complete invariant?

sep 28 at 18:41 F. C. 412●3●6

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7
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217
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What is the precise relationship between “prodsimplicial sets” and rooted trees?

may 23 at 5:40 some guy on the street 1,543●4●12

 
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2
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250
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Is it possible to define the notion of a localization of a category without reference to a set of morphisms, $S$?

apr 6 12 at 8:54 Martin Brandenburg 29.1k●2●45●129

 
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143
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What propositions about sets can be transfered to propositions about a presheaf category?

mar 7 12 at 2:18 Spice the Bird 940●3●14

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318
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What is the chromatic number of the graph whose vertices dimension $n-2$ subsimplicies of $\Delta^n$ and an edge between two vertices is given if the two associated $n-2$ vertices are contained in the same $n-1$ subsimplex?

jan 30 12 at 14:42 Richard Stanley 13.3k●2●60●94

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4
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417
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What is the intuition of connections for cubical sets?

nov 29 11 at 21:45 Dany Majard 93●5

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2
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393
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A subcategory of top where subspaces and subobjects coincide?

jun 23 11 at 11:10 Alex Simpson 379●1●9

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