User John Rognes

6 votes

Classifying the endofunctors of the category $\Delta$ of finite linear orders

answered Aug 17, 2022 at 18:34

6 votes

Relation between cohomology operations and the Adams spectral sequence

answered Nov 2, 2022 at 12:34

6 votes

Accepted

Loop-space functor on cohomology

answered May 17 at 19:53

5 votes

Accepted

Is there an ∞-categorical interpretation of the Quillen S⁻¹S construction?

answered Apr 16 at 13:47

5 votes

Group completion of a monoid (braid groups)

answered Apr 17 at 14:47

5 votes

Accepted

Does a complex-oriented $E_1$ ring spectrum (not assumed to have graded-commutative homotopy groups) receive a map from $MU$?

answered Dec 6, 2023 at 23:03

5 votes

Accepted

Definition of S-reducibility and reducibility of a space

answered Nov 4, 2022 at 19:05

5 votes

Accepted

What is the intuitive difference between these two simplicial subdivision functors?

answered Oct 17, 2023 at 14:28

5 votes

nonhausdorff dimension

answered Mar 22, 2013 at 15:13

5 votes

Question concerning h-cobordisms

answered Jun 23, 2011 at 21:46

5 votes

Accepted

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

answered Jun 23, 2011 at 19:10

5 votes

Accepted

The kernel of the natural map $\pi_k(BU(r)) \to \pi_k (BU)$

answered May 29, 2015 at 13:26

5 votes

Attaching an ideal whose square is zero: does this operation have a name and a notation?

answered May 16, 2016 at 20:52

5 votes

Reference request: Goodwillie tower of the identity

answered May 10, 2016 at 17:27

5 votes

Accepted

Torsion In $K$ theory on simply connected manifolds

answered Oct 16, 2016 at 10:37

5 votes

Accepted

Is there a fibration sequence of spectra $K\mathbb{F}_q\to KU\to KU$?

answered Dec 21, 2018 at 0:47

5 votes

Accepted

Descent properties of topological Hochschild homology

answered Sep 16, 2019 at 21:43

4 votes

Injectivity of assembly in A-theory for $BC_2 = \mathbb R P^\infty$ in degree $4$

answered Jan 8, 2022 at 10:36

4 votes

Accepted

Künneth spectral sequence for cohomology of chain complexes of $R$-modules

answered Jan 24, 2022 at 21:13

4 votes

Which maps of simplicial sets geometrically realize to fibrations?

answered Jan 14, 2019 at 17:40

4 votes

Accepted

Strong convergence of whole-plane spectral sequences

answered Jan 27, 2018 at 22:57

4 votes

Has anyone seen a nice map of multiplicative cohomology theories?

answered Dec 3, 2017 at 0:01

4 votes

Accepted

When does a map in the stable homotopy group gets killed when smashed with cone of itself?

answered May 16, 2015 at 7:39

4 votes

Homology of braid groups and loop spaces

answered Nov 6, 2022 at 15:03

4 votes

Explicit description of the right adjoint

answered Sep 5, 2022 at 17:51

4 votes

What is $TP(\mathbb{Z}_p)$?

answered May 12, 2022 at 20:39

4 votes

Identifying $d_1$ in the Atiyah-Hirzebruch-Serre spectral sequence

answered Oct 7 at 15:31

3 votes

Numerator in the zeta values at negative odd integers

answered Jul 30, 2022 at 21:18

3 votes

Defining homotopy via endofunctors of a simplicial category

answered Aug 13, 2022 at 15:33

3 votes

Multiplicativity of the homology Atiyah-Hirzebruch spectral sequence for a ring spectrum

answered Jun 5, 2019 at 22:04

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102 Answers

Classifying the endofunctors of the category $\Delta$ of finite linear orders

Relation between cohomology operations and the Adams spectral sequence

Loop-space functor on cohomology

Is there an ∞-categorical interpretation of the Quillen S⁻¹S construction?

Group completion of a monoid (braid groups)

Does a complex-oriented $E_1$ ring spectrum (not assumed to have graded-commutative homotopy groups) receive a map from $MU$?

Definition of S-reducibility and reducibility of a space

What is the intuitive difference between these two simplicial subdivision functors?

nonhausdorff dimension

Question concerning h-cobordisms

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

The kernel of the natural map $\pi_k(BU(r)) \to \pi_k (BU)$

Attaching an ideal whose square is zero: does this operation have a name and a notation?

Reference request: Goodwillie tower of the identity

Torsion In $K$ theory on simply connected manifolds

Is there a fibration sequence of spectra $K\mathbb{F}_q\to KU\to KU$?

Descent properties of topological Hochschild homology

Injectivity of assembly in A-theory for $BC_2 = \mathbb R P^\infty$ in degree $4$

Künneth spectral sequence for cohomology of chain complexes of $R$-modules

Which maps of simplicial sets geometrically realize to fibrations?

Strong convergence of whole-plane spectral sequences

Has anyone seen a nice map of multiplicative cohomology theories?

When does a map in the stable homotopy group gets killed when smashed with cone of itself?

Homology of braid groups and loop spaces

Explicit description of the right adjoint

What is $TP(\mathbb{Z}_p)$?

Identifying $d_1$ in the Atiyah-Hirzebruch-Serre spectral sequence

Numerator in the zeta values at negative odd integers

Defining homotopy via endofunctors of a simplicial category

Multiplicativity of the homology Atiyah-Hirzebruch spectral sequence for a ring spectrum