bio  website  math.uchicago.edu/~may 

location  US  
age  75  
visits  member for  4 years, 9 months 
seen  2 hours ago  
stats  profile views  7,290 
At the University of Chicago since 1967.
Mainly known as an algebraic topologist.
2d

awarded  Good Answer 
Aug
29 
comment 
coproduct of the homology of iterated loop space on spheres
Commented on an identical question: you have to use the Adem relations. 
Aug
28 
answered  The structure map of topological Ktheory 
Aug
11 
comment 
History of categorical localization sans calculi of fractions
Vivit, the 1967 book of GabrielZisman first gives the (settheoretically dubious) zigzag construction and then gives the calculation of the localization via a calculus of fractions. So I agree with Karol. 
Jun
28 
comment 
“To operate the machine, it is not necessary to raise the bonnet.”
Tom, yes it is, and Vidit is referring to the Math Review of Frank's book. 
Jun
28 
comment 
“To operate the machine, it is not necessary to raise the bonnet.”
Vidit, that isn't a capital M meant is it? I'm sure I heard Frank say that quote in a talk, but I can't remember when or where. I also couldn't find it in his "Infinite loop spaces", but that sure is still enjoyable reading. Let me just recommend it. 
Jun
15 
awarded  Enlightened 
Jun
15 
awarded  Nice Answer 
Jun
13 
comment 
Tensor products over operads and bar constructions
Hey, slow down and look at the "bar construction'' in the cited reference: O is a monad acting on the left on an algebra (or more generally on a functor out of some domain category) and on the right on a functor (such as the nfold suspension when O is the little ncubes operad). I assume right module is meant in the sense of Fresse's book ``Modules over operads and functors'', but I don't see that as a functor with a right action by the monad O, so I don't see what bar construction you have in mind. 
Jun
10 
answered  configuration space and iterated loop space 
Jun
9 
awarded  Nice Answer 
Jun
3 
comment 
What are algebras for the little nballs/ncubes/nsomething operads exactly?
Intuition here is fine, but what, precisely, do you mean by an "E_n operad" in a general context. I know precisely what we mean in topology (or differential graded module) contexts. 
May
29 
answered  Reference for an unbiased definition of a symmetric monoidal category 
May
14 
answered  Is there a (satisfying) proof that cellular cohomology is isomorphic to simplicial cohomology that doesn't use relative cohomlogy? 
May
13 
awarded  Enlightened 
May
13 
awarded  Nice Answer 
May
2 
comment 
Identifying a Hopf algebra cohomology theory
It seems to me that the natural action, under which you would be looking at a cobar construction, would just come from the diagonal on the left most tensor factor H. 
May
1 
answered  Identifying a Hopf algebra cohomology theory 
May
1 
awarded  Enlightened 
Apr
30 
awarded  Guru 