User John Klein

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On the (derived) dual to the James construction.

at.algebraic-topology homotopy-theory

Apr 19 '12 at 0:49 John Klein 15.6k

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votes

1

answer

517

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Local homology of a space of unitary matrices

reference-request at.algebraic-topology differential-topology smooth-manifolds stratifications

May 8 '17 at 12:32 Gregory Arone 5,753

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Transversality in the proof of the Blakers-Massey Theorem. Is it necessary?

at.algebraic-topology homotopy-theory

Jun 9 '17 at 21:08 Ronnie Brown 11.3k

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17

votes

2

answers

1k

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Geometric interpretation of the Pontryagin square

at.algebraic-topology smooth-manifolds

Sep 19 '16 at 13:45 Francesco Polizzi 53.8k

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votes

1

answer

474

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Whitehead products and Framed Manifolds

at.algebraic-topology homotopy-theory smooth-manifolds whitehead-product

Mar 21 '16 at 21:56 Dev Sinha 4,380

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15

votes

1

answer

1k

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On the wikipedia entry for Borel-Moore homology

at.algebraic-topology homology

Jul 30 '13 at 4:41 Ben Webster♦ 38.3k

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1

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Rational homotopy invariance of algebraic $K$-theory

reference-request at.algebraic-topology algebraic-k-theory

Jun 28 at 15:47 Lennart Meier 9,488

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votes

1

answer

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A variant of $\ell^2$-cochains

reference-request at.algebraic-topology fa.functional-analysis gt.geometric-topology

Aug 14 '17 at 2:32 Fedya 501

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votes

2

answers

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“Strøm-type” model structure on chain complexes?

at.algebraic-topology model-categories

Oct 13 '13 at 23:28 David White 17.7k

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1

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761

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On the stable splitting of loops on a suspension

at.algebraic-topology homotopy-theory ring-spectra

Feb 26 '13 at 0:02 Peter May 27.5k

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Hilton-Eckmann dual of the Steenrod Algebra

at.algebraic-topology homotopy-theory

May 16 '12 at 14:26 John Klein 15.6k

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Reference request: Goodwillie tower of the identity

at.algebraic-topology homotopy-theory

May 11 '16 at 9:42 John Rognes 5,496

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Equivariant homotopy theory: some history questions

ho.history-overview at.algebraic-topology

Sep 14 '12 at 1:39 François G. Dorais♦ 40.7k

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Acyclic aspherical spaces with acyclic fundamental groups

at.algebraic-topology group-cohomology localization

Nov 28 '17 at 21:58 Johannes Ebert 18.6k

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When is the one-point compactification well-pointed?

at.algebraic-topology gn.general-topology homotopy-theory compactifications

Aug 1 '13 at 3:10 Community♦ 1

3

10

votes

3

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539

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On the naturality of the bar construction

at.algebraic-topology loop-spaces

Mar 20 '13 at 0:58 Peter May 27.5k

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1

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co-$A_\infty$ spaces

at.algebraic-topology higher-category-theory

Jan 29 '11 at 2:22 Community♦ 1

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339

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Question about $A_\infty$ maps

at.algebraic-topology homotopy-theory operads

Jan 12 '11 at 3:27 John Klein 15.6k

9

votes

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290

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History of the definition of smooth manifold with boundary

dg.differential-geometry differential-topology ho.history-overview smooth-manifolds manifolds

Feb 27 '19 at 12:25 John Klein 15.6k

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9

votes

2

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608

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“Skew Cohomology” of a Space

at.algebraic-topology cohomology

Mar 4 '11 at 21:34 Mariano Suárez-Álvarez 43.3k

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494

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Weak Vector Bundles

at.algebraic-topology vector-bundles

Jan 21 '12 at 1:58 David Carchedi 13.9k

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1

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821

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The free smooth path space on a manifold

differential-topology smooth-manifolds fibre-bundles loop-spaces

Nov 8 at 22:06 Andrew Stacey 24k

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1

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437

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Waldhausen Additivity in a More General Context

at.algebraic-topology algebraic-k-theory

Jun 16 '15 at 4:57 Dan Ramras 6,663

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537

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Question about topological monoid maps

at.algebraic-topology semigroups-and-monoids reference-request

Apr 16 '13 at 12:59 Community♦ 1

3

7

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2

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963

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Deformation theory of co-$A_\infty$ structures.

at.algebraic-topology homotopy-theory homology deformation-theory

Jul 30 '11 at 9:22 Community♦ 1

3

7

votes

2

answers

525

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Why does the map $BG\to A(*)$ fail to split?

at.algebraic-topology algebraic-k-theory

Jun 23 '11 at 19:10 John Rognes 5,496

1

6

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1

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246

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An operad-like structure, is there a name for it?

at.algebraic-topology operads

Jan 4 '19 at 14:40 John Klein 15.6k

1

6

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0

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383

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Cohomology of a space with coefficients in a Lie group?

at.algebraic-topology cohomology

Jan 4 '12 at 2:41 John Klein 15.6k

1

5

votes

0

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115

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On the weak homotopy type of a differentiable (Chen) space

dg.differential-geometry at.algebraic-topology differential-topology rational-homotopy-theory differentiable-stacks

Oct 11 at 17:03 John Klein 15.6k

2

5

votes

0

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178

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Extensions of discrete groups by spectra

at.algebraic-topology equivariant-homotopy

Jan 18 '13 at 3:41 John Klein 15.6k

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34 Questions

On the (derived) dual to the James construction.

Local homology of a space of unitary matrices

Transversality in the proof of the Blakers-Massey Theorem. Is it necessary?

Geometric interpretation of the Pontryagin square

Whitehead products and Framed Manifolds

On the wikipedia entry for Borel-Moore homology

Rational homotopy invariance of algebraic $K$-theory

A variant of $\ell^2$-cochains

“Strøm-type” model structure on chain complexes?

On the stable splitting of loops on a suspension

Hilton-Eckmann dual of the Steenrod Algebra

Reference request: Goodwillie tower of the identity

Equivariant homotopy theory: some history questions

Acyclic aspherical spaces with acyclic fundamental groups

When is the one-point compactification well-pointed?

On the naturality of the bar construction

co-$A_\infty$ spaces

Question about $A_\infty$ maps

History of the definition of smooth manifold with boundary

“Skew Cohomology” of a Space

Weak Vector Bundles

The free smooth path space on a manifold

Waldhausen Additivity in a More General Context

Question about topological monoid maps

Deformation theory of co-$A_\infty$ structures.

Why does the map $BG\to A(*)$ fail to split?

An operad-like structure, is there a name for it?

Cohomology of a space with coefficients in a Lie group?

On the weak homotopy type of a differentiable (Chen) space

Extensions of discrete groups by spectra