1,272 reputation
513
bio website web.mat.bham.ac.uk/~barberba
location Birmingham, UK
age
visits member for 1 year, 8 months
seen 2 days ago

I recently completed my PhD in Cambridge under the supervison of Imre Leader, and am now a postdoc in Birmingham with Daniela Kühn.


2d
reviewed Reviewed identifiability of a linear regression
2d
reviewed No Action Needed Rational Hodge Theory
2d
reviewed No Action Needed Fundamental theorem of calculus for iterated stochastic integrals
Apr
17
reviewed No Action Needed Complexes of sheaves with locally constant cohomology versus $C_{*}(\Omega M)$-modules
Apr
17
comment Existence of a certain subset of natural numbers equidistributed modulo $m$ for every $m$
Try a random set: include each $n$ in $S$ independently with a probability chosen to make the density work out.
Apr
17
comment Extremal graph theory for directed graphs
Usually homomorphisms are not taken to be injective: that's exactly why they're easier to count than subgraphs. So you can map two vertices to the same point, but only if there is no edge between them. All odd cycles have a homomorphism onto the triangle, for example. (Even cycles do too, but in a boring way.)
Apr
16
answered Approximating Probability Distribution by Sampling
Apr
15
reviewed No Action Needed Structure of an intersection of $L^p$-spaces
Apr
14
comment Algebra and Cancer Research
Reidun Twarock and others have used group theory to predict the structure of viruses, with serious applications to drug design.
Apr
11
reviewed No Action Needed Extremal examples for a folklore lemma on subgraphs of large minimum degree
Apr
4
reviewed No Action Needed Units of a ring spectrum
Apr
2
reviewed Reviewed A variant of Kruskal's theorem
Apr
2
reviewed Reviewed how to complete arbitrary basis knowing 2 orthonormal vectors of Rd (d > 2)
Apr
1
reviewed No Action Needed Alternating series $\sum_{k=1}^{\infty}(-1)^{k+1} (H_k)^p z^k$ and multiple zeta values
Mar
27
comment A basic question on Stone-Cech compactification of $\mathbb{Z}$
@Alvin, could you add some details as an answer for people who come across this in future?
Mar
24
reviewed No Action Needed What is the definition of being smooth for a function from a Lie group to a Fréchet space?
Mar
23
comment maximum size of intersecting set families
I am not sure that there is an easy answer. This is design theory: see mathoverflow.net/questions/160787/… for a recent related question.
Mar
21
answered Do graphs with large number of cycles always contain large necklace minor?
Mar
19
comment Does high min degree and high odd girth imply near bipartiteness?
The previous comment was in response to @SureshVenkat's query, which also had me wondering.
Mar
19
comment Does high min degree and high odd girth imply near bipartiteness?
I think it works for "at least $k$". There's a bad scan of the paper at sciencedirect.com/science/article/pii/0012365X74901332 . The relevant claim is "$G$ non-bipartite, odd girth $k > 3$ $\Rightarrow$ $\delta(G) \leq 2n/k$" at the top of page 210.