User Nicolas Boerger

24 votes

3 answers

2k views

Hermann Weyl's work on combinatorial topology and Kirchhoff's current law in Spanish

asked Oct 2, 2017 at 16:26

19 votes

1 answer

646 views

Digitalized version of "Cours de topologie algébrique professé en captivité"

reference-request at.algebraic-topology ho.history-overview

asked May 20, 2020 at 16:45

11 votes

1 answer

203 views

Reference requests: Integral cohomology of $G_2$-homogeneous spaces

reference-request at.algebraic-topology lie-groups group-cohomology

asked Apr 21, 2019 at 22:19

10 votes

1 answer

343 views

Example of a finite group $G$ with low dimensional cohomology not generated by Stiefel-Whitney classes of flat vector bundles over $BG$

at.algebraic-topology rt.representation-theory group-cohomology

asked Feb 12, 2019 at 1:49

10 votes

1 answer

776 views

Acyclic Finite Groups

at.algebraic-topology gr.group-theory gt.geometric-topology

asked Jan 30, 2018 at 22:25

10 votes

1 answer

822 views

Status of Zeeman's collapsability Conjecture

at.algebraic-topology gt.geometric-topology discrete-geometry

asked Nov 3, 2015 at 14:34

10 votes

0 answers

323 views

Steenrod Problem and realization of rational homology classes by manifolds

at.algebraic-topology gt.geometric-topology

asked Feb 8, 2017 at 19:13

9 votes

1 answer

331 views

Atiyah Bott-Shapiro orientation Vs Anderson-Brown-Peterson Splitting

dg.differential-geometry at.algebraic-topology homotopy-theory

asked Feb 2, 2018 at 1:53

9 votes

1 answer

250 views

Topological Spin manifolds in dimension 4

at.algebraic-topology gt.geometric-topology cobordism spin-geometry surgery-theory

asked Nov 2, 2019 at 22:24

8 votes

1 answer

358 views

Morse Theory and proper actions

dg.differential-geometry

asked Mar 17, 2014 at 16:21

7 votes

1 answer

295 views

Reference request: mod 2 cohomology of periodic KO theory

at.algebraic-topology kt.k-theory-and-homology stable-homotopy

asked Jul 24, 2019 at 16:32

7 votes

1 answer

204 views

Five-dimensional manifolds fibering over a fixed hyperbolic surface

dg.differential-geometry at.algebraic-topology gt.geometric-topology mg.metric-geometry

asked Jun 12, 2018 at 18:53

6 votes

1 answer

132 views

Example of nonvanishing Waldhausen Nil group

at.algebraic-topology gt.geometric-topology kt.k-theory-and-homology

asked Oct 29, 2018 at 19:28

6 votes

1 answer

389 views

Amenability as a geometric property

geometric-group-theory

asked Sep 8, 2014 at 15:22

6 votes

1 answer

340 views

Differential of homological atiyah-Hirzebruch Spectral sequence for K-homology

at.algebraic-topology

asked Nov 6, 2014 at 22:15

5 votes

1 answer

204 views

homological 2 dimensional groups

at.algebraic-topology gr.group-theory gt.geometric-topology

asked Jan 6, 2016 at 22:21

5 votes

0 answers

147 views

Higher homotopy groups and ramified covering maps [duplicate]

at.algebraic-topology gt.geometric-topology smooth-manifolds

asked Jan 10, 2018 at 16:22

4 votes

1 answer

114 views

Enumeration of three dimensional spherical good orbifolds covered by Nil, sol and E3

reference-request gt.geometric-topology 3-manifolds

asked Jan 10, 2018 at 16:56

4 votes

0 answers

141 views

Character Theory for quaternionic representations of finite groups

rt.representation-theory kt.k-theory-and-homology

asked Jan 20, 2017 at 19:44

4 votes

0 answers

122 views

Spin bordism with non free involution

at.algebraic-topology homotopy-theory differential-topology spin-geometry equivariant-homotopy

asked Oct 12, 2016 at 15:05

4 votes

1 answer

279 views

Ends of Coxeter Groups

gr.group-theory gt.geometric-topology

asked Sep 10, 2014 at 14:46

4 votes

0 answers

255 views

Bordism and complex $K$-theory

at.algebraic-topology

asked Feb 3, 2014 at 13:58

3 votes

1 answer

175 views

Local cross sections for Unitary group in a hilbert space

oa.operator-algebras

asked Feb 25, 2013 at 15:06

3 votes

2 answers

195 views

f vectors of simplicial complexes homeomorphic to n dimensional spheres

co.combinatorics at.algebraic-topology gt.geometric-topology

asked Dec 7, 2015 at 16:53

3 votes

1 answer

281 views

Reduced Vs unreduced cohomology in the parametrized setting.

at.algebraic-topology homotopy-theory

asked Jan 11, 2017 at 15:18

3 votes

2 answers

615 views

Reference for de Rham cohomology for physicists

dg.differential-geometry mp.mathematical-physics noncommutative-geometry

asked May 16, 2017 at 16:18

3 votes

0 answers

107 views

Extensive survey of computations of equivariant stable stems

reference-request at.algebraic-topology equivariant-homotopy

asked Jun 17, 2019 at 17:41

3 votes

0 answers

79 views

Reference Request: Equivariant Symplectic bordism

at.algebraic-topology homotopy-theory cobordism equivariant-homotopy

asked Aug 24, 2018 at 21:20

3 votes

0 answers

65 views

Salvetti complexes and cohomology of affine completion of Artin groups $E_6$ and $E_7$

at.algebraic-topology gr.group-theory geometric-group-theory group-cohomology hyperplane-arrangements

asked Feb 4 at 13:16

3 votes

1 answer

66 views

Conjugacy of topological actions on aspherical three manifolds to isometric actions

gt.geometric-topology mg.metric-geometry 3-manifolds

asked May 30 at 21:03

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44 Questions

Hermann Weyl's work on combinatorial topology and Kirchhoff's current law in Spanish

Digitalized version of "Cours de topologie algébrique professé en captivité"

Reference requests: Integral cohomology of $G_2$-homogeneous spaces

Example of a finite group $G$ with low dimensional cohomology not generated by Stiefel-Whitney classes of flat vector bundles over $BG$

Acyclic Finite Groups

Status of Zeeman's collapsability Conjecture

Steenrod Problem and realization of rational homology classes by manifolds

Atiyah Bott-Shapiro orientation Vs Anderson-Brown-Peterson Splitting

Topological Spin manifolds in dimension 4

Morse Theory and proper actions

Reference request: mod 2 cohomology of periodic KO theory

Five-dimensional manifolds fibering over a fixed hyperbolic surface

Example of nonvanishing Waldhausen Nil group

Amenability as a geometric property

Differential of homological atiyah-Hirzebruch Spectral sequence for K-homology

homological 2 dimensional groups

Higher homotopy groups and ramified covering maps [duplicate]

Enumeration of three dimensional spherical good orbifolds covered by Nil, sol and E3

Character Theory for quaternionic representations of finite groups

Spin bordism with non free involution

Ends of Coxeter Groups

Bordism and complex $K$-theory

Local cross sections for Unitary group in a hilbert space

f vectors of simplicial complexes homeomorphic to n dimensional spheres

Reduced Vs unreduced cohomology in the parametrized setting.

Reference for de Rham cohomology for physicists

Extensive survey of computations of equivariant stable stems

Reference Request: Equivariant Symplectic bordism

Salvetti complexes and cohomology of affine completion of Artin groups $E_6$ and $E_7$

Conjugacy of topological actions on aspherical three manifolds to isometric actions