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Pedro
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12 votes
0 answers
286 views

How useful is knowing every torsionfree $\mathcal O(D)$ module is flat?

10 votes
0 answers
193 views

A theorem of Gugenheim on twisted tensor products

8 votes
2 answers
438 views

Homotopy pushout independent of factorization and symmetric in cofibration category

8 votes
1 answer
537 views

Is it possible to find a copy of the Cartan seminar (1954–1955) on homotopy and Eilenberg–Mac Lane spaces?

6 votes
0 answers
246 views

$\mathrm{HH}$ and $\mathrm{HC}$ as two different Taylor expansions at the same point

5 votes
1 answer
171 views

Sum zero problems on the poset of structures of a combinatorial species

5 votes
0 answers
171 views

Bar constructions and pushouts

4 votes
1 answer
169 views

Wall's presentation of the Steenrod algebra

3 votes
0 answers
54 views

Natural appeareances of (commutative) algebras in $\mathfrak g$-modules

3 votes
1 answer
453 views

What bigrading is used in this spectral sequence?

2 votes
1 answer
234 views

Poset filtrations

1 vote
0 answers
51 views

On the notation $C[\lambda]$ where $C$ is a free cooperad in a proof of formality (and other details)

1 vote
1 answer
155 views

About the proof that $A_{PL}$ is extendable in Halperin, Thomas and Felix

1 vote
1 answer
208 views

Is the following claim in "Elements of Representation Theory I" true?