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location Penn State, University Park, PA
age 64
visits member for 4 years, 8 months
seen 20 hours ago

May
15
comment Magnus' embedding theorem
Thank you, Igor!
May
14
comment Magnus' embedding theorem
@YCor I would appreciate a reference where such a homomorphism is explicitly described.
May
14
comment Magnus' embedding theorem
Thanks! It seems that what you denote by $F_n$ is $F/F_n$ in my notation.
May
14
asked Magnus' embedding theorem
May
9
awarded  Nice Answer
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 .