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Calderón–Zygmund lemma and Lebesgue measure

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#fourier-analysis #homotopy-theory
269
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How to construct $K(\mathbb{Z}/5\mathbb{Z},1)$?

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#algebraic-topology #homotopy-theory #eilenberg-maclane-spaces
205
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Find $f$ and $g$ homotopic s.t. induce different homomorphisms

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#algebraic-topology #homotopy-theory
266
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Relative homotopy and composition of maps

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#algebraic-topology #homotopy-theory
243
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functors with a morphism lifting property

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#category-theory #homotopy-theory
244
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Question about homotopic functions and homotopy classes

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#general-topology #homotopy-theory
1.5k
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What does it mean for a category to be "tensored over" another category?

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#category-theory #tensor-products #homotopy-theory #simplicial-stuff #model-categories
7.4k
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How to show $S^n$ is not contractible without using Homology..

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#algebraic-topology #homotopy-theory
1.1k
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The significance of filtered colimits in homotopy theory

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#algebraic-topology #homotopy-theory
171
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Tools for proving map is homotopy equivalence

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#homotopy-theory
6.1k
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Show that the Möbius band has its central circle $C$ as a deformation retract

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#general-topology #geometry #algebraic-topology #homotopy-theory
291
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Relationship between cohomology and higher-homotopy

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#homotopy-theory
148
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Simple homotopy construction

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#general-topology #algebraic-topology #homotopy-theory
437
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Let $X\subset\mathbb{R}^3$ be the union of the coordinate axies, I want to show that $\mathbb{R}^3-X$ is homotopy equivalent to a graph

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#general-topology #homotopy-theory
213
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Homotopic equivalence for $S^5$ without three $S^1$

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#algebraic-topology #homotopy-theory #geometric-topology

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