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Results tagged with gn.general-topology
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user 4991
Continuum theory, point-set topology, spaces with algebraic structure, foundations, dimension theory, local and global properties.
16
votes
References for homotopy colimit
Dan Dugger wrote the following intended for grad students (just a draft - not on the arxiv yet): http://www.uoregon.edu/~ddugger/hocolim.pdf
- 4,990
56
votes
understanding Steenrod squares
Here's how I explain Steenrod squares to geometers. First, if $X$ is a manifold of dimension $d$ then one can produce classes in $H^n(X)$ by proper maps $f: V \to X$ where $V$ is a manifold of dimens …
- 4,990