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Dec
16
revised Polynomials of low degree that clone polynomials of higher degree
clarified second condition
Dec
14
awarded  Tumbleweed
Dec
11
revised A sum-of-determinants identity
[Edit removed during grace period]
Dec
10
answered A sum-of-determinants identity
Dec
10
answered Whitehead for maps
Dec
10
revised Can a subset of the plane have nontrivial $H_2$ or $\pi_2$?
Spelling
Dec
10
awarded  Populist
Dec
10
awarded  Good Answer
Dec
9
awarded  Mortarboard
Dec
9
awarded  Nice Answer
Dec
9
answered Can a subset of the plane have nontrivial $H_2$ or $\pi_2$?
Dec
9
answered Hausdorff spaces such that every subset is a retract
Dec
7
asked Lusternik-Schnirelmann category of rational spaces of infinite type
Dec
7
reviewed Approve Second homotopy group of Cayley complex
Nov
22
comment Injectivity of Rewrite Rule in a Free Lie Algebra
Very nice and simple. Just what I need.
Nov
22
accepted Injectivity of Rewrite Rule in a Free Lie Algebra
Nov
22
revised Injectivity of Rewrite Rule in a Free Lie Algebra
revised question
Nov
21
asked Injectivity of Rewrite Rule in a Free Lie Algebra
Oct
25
revised Why is it so hard to compute $\pi_n(S^n)$?
gave homotopical reference for the James construction
Oct
22
awarded  Nice Answer