Reputation
3,019
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
10 18
Newest
 Critic
Impact
~68k people reached

  • 0 posts edited
  • 0 helpful flags
  • 126 votes cast
Mar
22
comment Weyl Groups as Galois groups
Jouve, Kowalski and Zywina constructed a degree 240 reciprocal polynomial with Galois group $W(E_8)$.
Mar
21
asked Weyl Groups as Galois groups
Mar
13
awarded  Critic
Oct
1
revised On the Magnus Representation of Free Metabelian Group
Additional information included.
Sep
30
answered On the Magnus Representation of Free Metabelian Group
Sep
30
awarded  Yearling
Jul
1
comment N-th root of unity in N-th division field of abelian variety?
Actually, $A^4$ does not have to be principally polarized. In fact, it does not have to be isomorphic to its dual. (As an example, you may take an abelian surface $A$ over an algebraically closed field $K$ with $\End(A)=\Z$ and such that $\Hom(A,A^t)$ is generated by the polarization $\lambda: A \to A^t$ with $\ker(\lambda)$ being a product of two cyclic groups of prime order $\ell \ne char(K)$.) It is $(A \times A^t)^4$, which is always principally polarized.
Jun
4
revised N-th root of unity in N-th division field of abelian variety?
added 170 characters in body
Jun
4
answered N-th root of unity in N-th division field of abelian variety?
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