244 reputation
19
bio website
location
age
visits member for 4 years, 2 months
seen Jun 8 at 19:57
Aspiring physicist, autodidact.

Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Jun
25
awarded  Citizen Patrol
Nov
24
awarded  Popular Question
Aug
11
awarded  Yearling
Mar
15
awarded  Nice Question
Dec
3
accepted When are non-quasi-coherent sheaves used?
Nov
2
asked When are non-quasi-coherent sheaves used?
Oct
27
asked What are some open problems in toric varieties?
Oct
27
comment two sequences whose difference converges to zero
$A_n$ and $B_n$ are "asymptotically equal" - proofwiki.org/wiki/Definition:Asymptotically_Equal
Oct
11
comment Secondary fans and Stanley Reisner ideals
It's apparently a bug in chrome for Linux. Do you happen to know of an algorithm to explicitly compute all coherent triangulations of a set $S$?
Oct
3
accepted Secondary fans and Stanley Reisner ideals
Oct
3
comment Secondary fans and Stanley Reisner ideals
Thanks David! The codimension one problem has been throwing me for awhile. Something's wrong with the display of your first equation though; it should be $$\tilde{f}(w) = \max \{ \sum a_i f(s_i) : \ \sum a_i s_i = w,\ a_i \geq 0 \}.$$
Oct
1
revised Secondary fans and Stanley Reisner ideals
fixed grammar
Oct
1
comment Singular locus of a homogeneous polynomial.
This question has been re-posed and answered: mathoverflow.net/questions/40672/…
Sep
30
accepted Constructing affine hypersurfaces with one singularity
Sep
30
comment Constructing affine hypersurfaces with one singularity
@mdeland: I understand that they are equivalent. I don't understand how this answers my question; you've just rephrased it to "what are conditions on $S$ and/or $H$ such that the weighted projective space is smooth". Having coprime weights that divide the degree is not enough: I can assign degree 2 to $x$ and 1 to $y$ in example 1, and $2|6$, but the singular locus of $x^3$ is not the origin.
Sep
30
comment Constructing affine hypersurfaces with one singularity
@mdeland; I want to know when the affine hypersurface has such a singularity. I hope I made that clear this time in my question.
Sep
30
asked Constructing affine hypersurfaces with one singularity
Sep
30
comment Singular locus of a homogeneous polynomial.
@Emerton: How do I find this polynomial?