bio | website | |
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location | ||
age | ||
visits | member for | 4 years, 4 months |
seen | Apr 10 at 18:39 | |
stats | profile views | 279 |
Mar 6 |
comment |
Algorithm for computing basis of zero dimensional ring?
@Qiaochu: I just meant the global section of Spec of that ring, i.e. the ring itself.... It seems unnecessary to use that language so I have changed the working. Sorry for the confusion... |
Mar 6 |
revised |
Algorithm for computing basis of zero dimensional ring?
added 25 characters in body |
Mar 6 |
comment |
Algorithm for computing basis of zero dimensional ring?
@Steven: I am curious what algorithm does that command use? |
Mar 6 |
asked | Algorithm for computing basis of zero dimensional ring? |
Feb 21 |
comment |
Computer package to compute HOMFLY polynomial?
@Steven: I have installed the package and it works nice! One more question, how to generate the cable over trefoil in that package? |
Feb 21 |
comment |
Computer package to compute HOMFLY polynomial?
@Andrew: Thanks! |
Feb 20 |
awarded | Commentator |
Feb 20 |
comment |
Computer package to compute HOMFLY polynomial?
@Steven: Thanks, I will try it out! |
Feb 20 |
comment |
Computer package to compute HOMFLY polynomial?
@Ryan: I want to compute the HOMFLY polynomial of (3,19) cable over trefoil. |
Feb 19 |
asked | Computer package to compute HOMFLY polynomial? |
Jan 19 |
comment |
What are the general techniques for proving a variety is not toric?
@Piotr: Thanks, it has been changed! |
Jan 19 |
revised |
What are the general techniques for proving a variety is not toric?
deleted 4 characters in body |
Jan 17 |
comment |
What are the general techniques for proving a variety is not toric?
@Piotr: Changed! |
Jan 17 |
revised |
What are the general techniques for proving a variety is not toric?
edited title |
Jan 17 |
asked | What are the general techniques for proving a variety is not toric? |
Jan 3 |
comment |
When will the pushforward of a structure sheaf still be a structure sheaf?
Is the reference to Hartshorne III.10.3 correct? |
Dec 31 |
accepted | Why nilpotent elements must be allowed in modern algebraic geometry? |
Dec 31 |
awarded | Editor |
Dec 31 |
revised |
Cell decomposition of punctual Hilbert scheme of points on $A^n$?
deleted 3 characters in body; edited title |
Nov 20 |
comment |
How Fine One Must Choose an Affine Cover to get Weil Restriction?
@nosr: I think I figured this out, by infinitesimal criterion for etaleness: a morphism $f: X\to Y$ of locally of finite presentation iff for any $Y$-scheme $T$ and closed subscheme $T_0$ of $T$ defined by a square zero ideal, the map of sets $\Hom_Y(X,T)\to\Hom_Y(X,T_0)$ is bijective. Now etaleness follows if we use the universal property defining Weil restriction and the above criterion.... |