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Proving homotopy equivalence of a torus with points removed

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#algebraic-topology #homotopy-theory
66
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Prove of homotopy equivalence using differential equation

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#ordinary-differential-equations #algebraic-topology #homotopy-theory
234
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Finding the boundary of the continuous image of a compact simply-connected Lie group

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#general-topology #continuity #homotopy-theory #compact-manifolds
103
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Why is $H_5(K(\Bbb Z_n,4))$ finite?

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#algebraic-topology #homotopy-theory #eilenberg-maclane-spaces
237
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Triangle inside a simply connected open subset of the complex plane

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#complex-analysis #algebraic-topology #homotopy-theory
440
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Topology of non-degenerate $n\times n$ Hermitian matrices

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#eigenvalues-eigenvectors #operator-theory #homotopy-theory #quantum-computation
82
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On linear homotopy of operators

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#algebraic-topology #operator-theory #homotopy-theory
172
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$\mathbb{R}^n - B[0,r]$ is simply connected if $n>2$

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#general-topology #analysis #algebraic-topology #homotopy-theory
105
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Is the subgroup of homotopically trivial isometries a closed subgroup of the isometry group?

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#general-topology #manifolds #lie-groups #riemannian-geometry #homotopy-theory
210
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Inducing a homotopy

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#general-topology #homotopy-theory
648
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reference request: Postnikov towers for non-simply-connected spaces

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#reference-request #algebraic-topology #homotopy-theory
153
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Relation between complex and real sphere

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#general-topology #algebraic-geometry #algebraic-topology #homotopy-theory
1.6k
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fundamental group of a torus

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#algebraic-topology #homotopy-theory
417
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Different possibilities defining $\eta^2$ in the ring of stable homotopy groups?

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#algebraic-topology #homotopy-theory #stable-homotopy-theory
56
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some help on the group of unknotted

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#algebraic-topology #homotopy-theory #knot-theory

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