bio | website | |
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location | Penn State, University Park, PA | |
age | 64 | |
visits | member for | 4 years, 7 months |
seen | May 1 at 0:51 | |
stats | profile views | 1,341 |
Dec 30 |
comment |
Completion of a local ring of a curve
You are welcome. |
Dec 30 |
answered | Completion of a local ring of a curve |
Nov 25 |
comment |
Fermat's last theorem over larger fields
The reference above contains an abstract in English. However, the paper is available in English as well: mr.crossref.org/iPage?doi=10.1070%2FIM2001v065n03ABEH000337 . |
Nov 25 |
answered | Fermat's last theorem over larger fields |
Sep 30 |
awarded | Yearling |
Sep 19 |
answered | Endomorphism Ring of Simple Abelian Varieties |
Jun 4 |
awarded | Enlightened |
Jun 4 |
awarded | Nice Answer |
May 15 |
awarded | Good Answer |
Jan 14 |
awarded | Nice Answer |
Dec 13 |
awarded | ag.algebraic-geometry |
Dec 12 |
comment |
Mumford-Tate groups of products of Hodge structures
Yes, you are right: please see my counterexample below. |
Dec 12 |
answered | Mumford-Tate groups of products of Hodge structures |
Dec 12 |
answered | can all CM types be realized by Jacobians? |
Nov 17 |
comment |
When are K-automorphisms of the n-torsion of an elliptic curve E/K liftable to K-endomorphisms of E?
It seems to me that for elliptic curves the question (for non-CM) elliptic curves $E$ about the Galois image in $Aut(E[p])$ was raised by Serre in his (already mentioned) 1972 Inventiones paper. Some partial (but very important) results in this direction were obtained recently by Yuri Bilu and Pierre Parent annals.math.princeton.edu/2011/173-1/p13 . |
Nov 13 |
comment |
Mumford-Tate groups of products of Hodge structures
As far as I know, Mumford-Tate groups are never semisimple. |
Nov 8 |
comment |
When are K-automorphisms of the n-torsion of an elliptic curve E/K liftable to K-endomorphisms of E?
Dear Stefan, you are welcome. As far as I know, nobody stated it as a conjecture for $d>1$. |
Nov 7 |
answered | When are K-automorphisms of the n-torsion of an elliptic curve E/K liftable to K-endomorphisms of E? |
Oct 1 |
awarded | Nice Answer |
Sep 30 |
awarded | Yearling |