1,005 reputation
517
bio website
location London, UK
age 25
visits member for 5 years, 2 months
seen May 19 at 14:17

I have recently completed an undergraduate master's degree in maths at Imperial College, London, and am currently looking at PhDs. I seem to have been doing a surprising amount of geometry recently.


May
19
comment How to find or constrain “particularly good” (two-sided) spectral expanders?
Right - which is why, in my question, I specifically asked about "the largest (in terms of n) graph(s) for which λ ≤ x, given some x < 2√(k-1)" where n is the number of vertices, k is the degree, λ is the largest absolute value of a non-trivial eigenvalue of the adjacency matrix.
May
19
awarded  Yearling
Mar
24
comment Uninteresting questions with interesting answers
Is there a formulation involving signed area for nonconvex curves, or is the convexity really essential?
Oct
21
comment Riemannian metric on a space of “not-quite-smooth” (hyper)surfaces?
Thanks very much! It's been a while since I was last looking at this sort of thing, but this looks like it might rekindle my interest.
Oct
20
answered Equivalence classes of (2,3)-pairs in PSL(2,q)
Oct
3
comment Pi and the primes: a pattern related to the Ulam spiral
Ok, I've reuploaded them - hopefully they should all work now.
Oct
3
revised Pi and the primes: a pattern related to the Ulam spiral
re-uploaded images
Oct
2
comment Equivalence classes of (2,3)-pairs in PSL(2,q)
@NickGill: (Assuming by "conjugate" you include outer automorphisms as well) how does one check that? I am especially interested in the cases when q is either prime or a power of 2, so in a sense this would answer half of my question.
Oct
1
comment Equivalence classes of (2,3)-pairs in PSL(2,q)
Thanks for this. I confess to not really having encountered GAP before, so I'll try playing around with it before asking any more questions of this sort.
Oct
1
comment Equivalence classes of (2,3)-pairs in PSL(2,q)
Ok, thanks. I will be sure to follow this advice in future.
Oct
1
asked Equivalence classes of (2,3)-pairs in PSL(2,q)
Sep
24
awarded  Autobiographer
Sep
4
revised (Connected) Cayley graphs of PSL(2,q) from (2,3,n)-triples
minor clarification
Sep
4
comment (Connected) Cayley graphs of PSL(2,q) from (2,3,n)-triples
The motivation is merely that such a generating set is the smallest possible which is both closed under inverses and "symmetric", in the sense that it's closed under conjugation by B.
Sep
4
revised (Connected) Cayley graphs of PSL(2,q) from (2,3,n)-triples
corrected statement about subgroups; formatting
Sep
4
comment (Connected) Cayley graphs of PSL(2,q) from (2,3,n)-triples
Yes, sorry, what I wrote was nonsense. I'll correct it now.
Sep
3
awarded  Yearling
Sep
3
asked (Connected) Cayley graphs of PSL(2,q) from (2,3,n)-triples
Sep
3
accepted Cubic Cayley (undirected) graphs
Sep
3
comment Cubic Cayley (undirected) graphs
Both of the answers posted here have been informative, but I'm accepting this one on the basis that verret is "really" responsible for both of them. I hope this is acceptable etiquette.