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This tag is used if a reference is needed in a paper or textbook on a specific result.
3
votes
Accepted
Explicit contraction for the universal simplicial bundle WG
Pages 75-81 of Appendix A of On the theory and applications of differential torsion products, Memoirs AMS 142 (1974), by V.K.A.M. Gugenheim and myself, gives a detailed treatment of the $W$-constructi …
6
votes
Accepted
Model categories and chain complexes
I'll take your question as license to advertise a relatively recent paper in a slightly more specialized but concretely calculational direction: http://nyjm.albany.edu/j/2014/20-53p.pdf. Its title …
6
votes
Reading list for Equivariant Cohomology
I would like to point out that the term "equivariant cohomology'' is ambiguous. To those unfamiliar with modern algebraic topology, it means Borel cohomology, the cohomology theory that is the subjec …
6
votes
Lecture notes by Mahowald and Unell
Sanath, you will be happy to learn that I do have these notes. I'll give them to you to copy after you arrive in Chicago Monday.
38
votes
The category of posets
Here is a fact that should be much more widely known than it is.
The category of posets is isomorphic (not just equivalent) to the
category of $T_0$ Alexandrof spaces. A topological space is said to …
15
votes
Accepted
Naturality of Moore-Postnikov systems
Working simplicially (in those days called "semi-simplicially") this is surely due to Moore, with details in unpublished 1956 lecture notes and in John C. Moore, Semi-simplicial complexes and Postniko …
23
votes
Why do homotopy theorists care whether or not $BP$ is $E_\infty$?
I suppose I should try to answer since the question of whether or not $BP$ is an $E_{\infty}$ ring spectrum
was Problem 1 of "Problems in infinite loop space theory'', http://www.math.uchicago.edu/~ma …
4
votes
Accepted
The $\Gamma$-category associated to a permutative category
There are several different, provably equivalent, definitions. Construction 10 in http://www.math.uchicago.edu/~may/PAPERS/23.pdf is one example. It is used to prove the uniqueness of a machine takin …
10
votes
Reference for ring structure on Thom spectra
The late Gaunce Lewis's 1978 PhD thesis ``The stable category and generalized Thom spectra'' proved (as a special case) that the Thom spectra of $F$ and its oriented version $SF$ (alias $GL_1(S)$ or $ …
2
votes
Accepted
Where can I find basic "computations" of equivariant stable homotopy groups?
Since Denis gave the right reference, namely http://www.math.uchicago.edu/~may/BOOKS/equi.pdf, I did not follow up and answer this question. We can work with any compact Lie group and any complete un …
4
votes
$RO(G)$-graded homotopy groups vs. Mackey functors
A. The brackets are the same computed in any model, as you say, and for most that entails
fibrant approximation. For genuine $G$-spectra (complete universe), $G$ a compact
Lie group, it goes back …
6
votes
Computations in modular cohomology of finite groups
There is a comprehensive set of calculations of the homology of classical groups over finite fields in Z. Fiedorowicz and S. Priddy. Homology of classical groups over finite fields and their associate …
10
votes
Reference for an unbiased definition of a symmetric monoidal category
This is not quite what you mean, but relevant. Remember that a strictly associative and unital symmetric monoidal
category is called a permutative category. I observed ages ago (http://www.math.uchi …
9
votes
Accepted
Classifying space for fibrations with Eilenberg-MacLane space as fibers
There is a very careful analysis of this question in Lemma 3.4.2, page 57, of More Concise Algebraic Topology, by Kate Ponto and myself. Assuming that $E$ and $B$ are connected, a fibration $E\longrig …
9
votes
Accepted
Image of J splitting
my friend, I have an email! But I can offer the history.
First, although the $E_{\infty}$ book was published in 1977, it is a
shotgun marriage of a bunch of earlier preprints that were rejected
for …