18,683 reputation
143104
bio website shef.ac.uk/nps
location Sheffield
age 48
visits member for 3 years, 11 months
seen yesterday
I am an algebraic topologist, based at the University of Sheffield.

Oct
18
reviewed Close Inequality for an integral involving $ \exp $, $ \sin $ and $ \cos $
Oct
18
reviewed Close Guess A Property Of The Integral Average Value Function
Oct
18
reviewed Close Get fractional LP into canonical form
Oct
18
reviewed Close CAT spaces and Metric Measure Spaces
Oct
18
reviewed Close Stable curves and degenerations of smooth ones
Oct
17
revised Fibrations of the injective model structure on G-simplicial sets
Spelling in title
Oct
17
reviewed Leave Open Tangent space describes the manifold's first order characteristic. Is there something like tangent space describes higher order characteristic?
Oct
16
reviewed Close Population Variance PDF given Sample Variance
Oct
14
comment A simple proof that parallelizable oriented closed manifolds are oriented boundaries?
@AndréHenriques: the boundary of $N$ is morally $S(TM)$; that is only the same as $M\times S^{m-1}$ because $M$ is parallelizable.
Oct
14
reviewed Close Sum of n independent F distribution random variables
Oct
13
comment Classification of rings satisfying $a^4=a$
I am happy for this to be made CW.
Oct
12
revised Is pushforward of an ample divisor under small birational map nef?
Spelling in title
Oct
10
answered Information needed to distinguish combinatorially isomorphic polytopes (up to affine equivalence)
Oct
8
reviewed Close Evaluation of the multiple integral
Oct
6
reviewed Leave Open investigating positivity/negativity of a function
Oct
3
comment Goodwillie tower of $\Omega^n$?
As $\Omega^n$ preserves homotopy pullbacks, the derivatives of $\Omega^n$ will just be $\Omega^n$ of the derivatives of the identity.
Oct
2
reviewed Close What is between super-reflexivity and reflexivity?
Oct
2
reviewed Close MInors related problem
Oct
2
reviewed Leave Open Comparing two definitions of determinant of coherent sheaves
Oct
2
reviewed Leave Open Is there a bijection of permutations onto mathematical objects that preserve information about descents?