bio  website  math.uchicago.edu/~may 

location  US  
age  74  
visits  member for  3 years, 4 months 
seen  18 hours ago  
stats  profile views  5,271 
At the University of Chicago since 1967.
Mainly known as an algebraic topologist.
54m

awarded  Enlightened 
Apr 7 
awarded  Necromancer 
Apr 7 
answered  Infinite loop of a pcompleted specta vs pcompletion of infinite loop of the spectra 
Apr 6 
answered  How to recognize a Hopf algebra? 
Apr 5 
answered  What does it mean to speak of a homotopy fibration sequence? 
Apr 5 
answered  rationalization of classifying spaces 
Apr 5 
comment 
Units of a ring spectrum
Whoa. Units were initially developed to study obstructions to orientability of bundles and fibrations, among other (and deeper) things, such as understanding F/Top as BO{\otimes} as an infinite loop space away from 2. It was maybe 30 years later that we understood orientations in terms of understanding twists of parametrized spectra. 
Feb 20 
awarded  Enlightened 
Feb 20 
awarded  Nice Answer 
Feb 9 
comment 
Equivalence of homotopy categories and model structure theory
Actually, I first became truly convinced of the force of model category theory while writing EKMM. I had long wanted to prove that the periodic Ktheory spectra are E_{\infty} ring spectra, knowing by infinite loop space theory that their connective covers are such. Thinking model theoretically, this became so easy it was like a joke (in fact, I burst out laughing in the shower when I noticed it). 
Feb 9 
answered  Equivalence of homotopy categories and model structure theory 
Feb 7 
comment 
Are these two notions of “dualizable” spectra equivalent?
Qiaochu, don't you mean finitely generated, rather than finitely presented? 
Feb 3 
comment 
origin of spectral sequences in algebraic topology
And sometimes just there in plain sight, as the Bockstein ss exact couple is. Their low level nature is a great virtue and convenience. For example, by far the best high level study of convergence, Boardman's ``Conditionally convergent spectral sequences'' starts from exact couples. 
Feb 3 
comment 
origin of spectral sequences in algebraic topology
Right Tom, maybe we are just too old (or at least I am:) 
Feb 3 
awarded  Nice Answer 
Feb 3 
comment 
origin of spectral sequences in algebraic topology
This refers to your parenthetical remark about having to do some work. In plain down to earth terms, Appendix B of ``Geneneralized Tate cohomology'' by Greenlees and myself (math.uchicago.edu/~may/PAPERS/Tate.pdf) gives details of the comparison between the usual cellular construction of the AHSS and the dual "cocellular" Postnikov tower construction you are discussing. 
Feb 2 
answered  origin of spectral sequences in algebraic topology 
Feb 2 
answered  Equivariant classifying spaces from classifying spaces 
Jan 29 
awarded  Nice Answer 
Jan 26 
comment 
Image of J splitting
This toy refused to save an edit: Hey Craig, my friend,... 