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FKranhold
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9 votes
1 answer
595 views

Cup products in the Mayer-Vietoris sequence

6 votes
1 answer
188 views

Two monoidal structures and copowering

6 votes
1 answer
258 views

Isomorphisms in enriched categories

6 votes
1 answer
313 views

Free operad over a monoid object

6 votes
1 answer
217 views

Equivalence relations in arbitrary categories

6 votes
0 answers
139 views

Continuous functors, spectra and homology theories

6 votes
1 answer
120 views

Is there a filtered splitting of product labelling spaces?

5 votes
1 answer
212 views

Enriched coends which preserve equivalences

5 votes
1 answer
470 views

Sign in May’s General algebraic approach to Steenrod operations

5 votes
1 answer
261 views

Ádem relations for the Steenrod and the Dyer–Lashof algebra

5 votes
1 answer
202 views

Graded commutativity of the $n$th Browder bracket

4 votes
0 answers
169 views

Dyer–Lashof operations for more than 2 inputs

4 votes
1 answer
469 views

Generators of the mapping class group for surfaces with punctures and boundaries

4 votes
0 answers
113 views

Second homology of finitely presented group with free abelianisation

4 votes
1 answer
152 views

Conjugating generators in free groups

4 votes
0 answers
107 views

Mysterious identity in cosimplicial $R$-module with Lie brackets

4 votes
0 answers
98 views

Pushforward of an internal category along a functor

4 votes
1 answer
304 views

Different ways to “deloop” a (topological) $A_\infty$-algebra

4 votes
0 answers
229 views

Composition of prolongations of $\Gamma$-spaces

4 votes
1 answer
187 views

Group completion of $E_k$-algebras

4 votes
0 answers
150 views

Relative Thom isomorphism

3 votes
0 answers
66 views

Simplicial spaces and reflexive coequalisers

3 votes
1 answer
143 views

Are cofibrations in topological monoids preserved by forming the product with the identity?

3 votes
0 answers
117 views

Classifying spaces of amalgamated topological monoids

3 votes
0 answers
137 views

Naturality of Poincaré–Lefschetz

3 votes
0 answers
73 views

Generating an enriched multicategory

3 votes
0 answers
123 views

Dual Steenrod squares

3 votes
0 answers
85 views

Homotopy type of hyperplane arrangements intersected with real subspaces

3 votes
1 answer
87 views

$H$-space structure on coloured algebras

3 votes
1 answer
277 views

Covering with Deck group $\mathfrak{S}_3$