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This tag is used if a reference is needed in a paper or textbook on a specific result.

5 votes

Reference for functors in Kadeishvili's C_\infty paper

Ben Walter and I make the functors $\Gamma$ and $A$ more explicit, by using an explicit model for the cofree Lie Coalgebra functor, in this paper. We do not discuss the application to $\infty$-algebr …
Glorfindel's user avatar
  • 2,821
13 votes

Detailed proof of cup product equivalent to intersection

Bott and Tu do this completely, in the de Rham theoretic setting of course. Here's an alternate proof I have used when I teach this material, which I find slightly more clean and direct than using Tho …
Dev Sinha's user avatar
  • 4,990
19 votes

Modern survey of unstable homotopy groups?

Behrens's monograph "The Goodwillie tower and the EHP sequence" reproduces some of the Toda calculations (out to the k~20 range as you cite) using a modern toolset, as named in the title. Depending o …
Ali Caglayan's user avatar
  • 1,185
7 votes
1 answer
2k views

Tensor products of permutation representations of symmetric groups.

I am looking for a reference for the following fact which must be classical (which makes it harder, for me, to track a reference down). I am interested because there are similar (more complicated) st …
11 votes
1 answer
564 views

The space of compact subspaces of $R^\infty$ homotopy equivalent to a given finite complex.

Let $X$ be a finite (CW or simplicial - doesn't matter) complex and consider the space of all compact subspaces of $R^\infty$ which are homotopy equivalent to $X$, topologized say as a subspace of the …
14 votes
2 answers
1k views

Dyer-Lashof based spectral sequence for homotopy classes of maps between infinite loop space...

The homology of an infinite loop space, which represents a spectrum, is an algebra over the Dyer-Lashof algebra (see for example Cohen-Lada-May's Springer volume, or for part of the story the more acc …
7 votes

Is there any analogs of Vassiliev invariants in higher dimensions?

The best work I know of along these lines was by Rossi, a student of Cattaneo, which is explained here: http://www.math.uzh.ch/fileadmin/math/preprints/07-05.pdf There are a number of interrelated vi …
Dev Sinha's user avatar
  • 4,990
16 votes

References for homotopy colimit

Dan Dugger wrote the following intended for grad students (just a draft - not on the arxiv yet): http://www.uoregon.edu/~ddugger/hocolim.pdf
Dev Sinha's user avatar
  • 4,990
4 votes

Burnside ring and zeroth G-equivariant stem for finite G

Here's a conceptual answer, which can be filled in to give a proof. First, go back to the non-equivariant setting: why is $\pi_0(S) = \lim \pi_N(S^N) \cong {\mathbb Z}$? because one can use transver …
Dev Sinha's user avatar
  • 4,990