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Jeff Strom's user avatar
Jeff Strom's user avatar
Jeff Strom
  • Member for 14 years, 10 months
  • Last seen more than a month ago
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revised
Why is the definition of the higher homotopy groups the "right one"?
provided reference
comment
Why is the definition of the higher homotopy groups the "right one"?
Milnor did this. I'll try to track down the paper, but I think it was late 1950s or early 1960s.
comment
An abstract nonsense proof of the Hurewicz theorem
@DylanWilson I think you'd want to check your constructions carefully before you claim anything involving spectra is done without some kind of appeal to Freudenthal.
revised
An abstract nonsense proof of the Hurewicz theorem
deleted 4 characters in body
awarded
 Nice Answer
revised
An abstract nonsense proof of the Hurewicz theorem
clarity
comment
An abstract nonsense proof of the Hurewicz theorem
More detail on Eilenberg-Mac Lane spaces added.
revised
An abstract nonsense proof of the Hurewicz theorem
MORE detail
revised
An abstract nonsense proof of the Hurewicz theorem
added detailed argment
answered
An abstract nonsense proof of the Hurewicz theorem
reviewed
Approve
Computational number theory
reviewed
Approve
Fano plane drawings: embedding PG(2,2) into the real plane
accepted
Spaces that invert weak homotopy equivalences.
reviewed
Approve
Problems reducing to a graph-theory algorithm
comment
Spaces that invert weak homotopy equivalences.
This arxiv.org/abs/1709.08734 came up on the arXiv today. I hope Jonathan Ariel Barmak will post soon and collect his checkmark.
awarded
 Nice Question
comment
The Jones polynomial at specific values of $t$
this is kind of neat: the values of $J$ are a family of link properties; and if you know the degree is $n$, then any $n+1$ of these properties determine $J$, and all the others...
answered
What is the most useful non-existing object of your field?
comment
Cellular or acyclic inequalities for homotopy fibers of suspension maps
Yes, those are among the biggest names in this subject. I haven't found this question addressed in the literature, though.
revised
Cellular or acyclic inequalities for homotopy fibers of suspension maps
Added definition
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