21,255 reputation
152117
bio website shef.ac.uk/nps
location Sheffield
age 48
visits member for 4 years, 6 months
seen 41 mins ago
I am an algebraic topologist, based at the University of Sheffield.

36m
reviewed Close Find a polynomial not in any ideal generated by polynomials of total degree $o(n)$
36m
reviewed Leave Open Geodesic equation and radial metric
39m
revised algebraic closedness in in residue field
Spelling, LaTeX
4h
comment Is anything known about the eigenspectrum of the regular representation of the permutation group?
The two answers appear to assume that you want to know the spectrum for the action on an arbitrary irreducible. If you are really only interested in the regular representation, then @ARupinski's comment is all you need.
1d
reviewed Close Animating a unitary transform
1d
comment Can topological cyclic homology compute Picard groups?
If $A$ is the ring of integers in number field, I think it is true more generally that $A_p$ is a finite product of discrete valuation rings and so has trivial class group. I think that your line of argument can therefore be adapted to show that $K_0(A)\to TC_0(A)$ always kills the class group
1d
comment How to teach generalizing the induction hypothesis?
This would be better at matheducators.stackexchange.com
1d
reviewed Close Singularities in minimal surfaces
1d
reviewed Leave Open Does “equalisers always closed” imply $T_2$?
2d
comment Extension of conformal map and annulus
I don't think that this is correct. Why should there be a Mobius function?
2d
revised Extension of conformal map and annulus
added 3 characters in body
2d
answered Extension of conformal map and annulus
2d
reviewed Leave Open compact inclusion of domains of unbounded operators
2d
reviewed Close Can states on commutative Banach algebras be understood as probability measures?
2d
reviewed Close Unbounded polynomials
2d
reviewed Close Limit Group decomposition
2d
revised A question about Weil restriction
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Apr
22
reviewed Close Definition of equi-absolute continuity
Apr
22
reviewed Close Determining primitive ideal space of C*-algebra
Apr
22
comment Are Bökstedt's THH manuscripts available?
You could just email Bökstedt and ask him about putting his old preprints online. He is still active, and his recent papers are on the arxiv, although it may be that his coauthors did the work of uploading them; he does not seem to have a home page that he maintains himself. Maybe you could approach one of those coauthors and ask them to negotiate with Bökstedt.