bio | website | |
---|---|---|
location | London, UK | |
age | 25 | |
visits | member for | 5 years, 2 months |
seen | May 19 at 14:17 | |
stats | profile views | 1,045 |
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. |