Postdoc at the University of Bristol

Aug
6
awarded Nice Answer
Jun
15
awarded Nice Question
May
30
revised Endomorphism algebras of abelian surfaces with real multiplication
added 10 characters in body
May
30
awarded Curious
May
29
asked Endomorphism algebras of abelian surfaces with real multiplication
Jan
19
awarded Yearling
Jan
19
awarded Yearling
Nov
27
awarded Autobiographer
Nov
27
awarded Autobiographer
Nov
6
awarded Popular Question
Nov
6
awarded Necromancer
Sep
24
awarded Autobiographer
Sep
24
awarded Autobiographer
Sep
24
awarded Autobiographer
Jun
21
awarded Editor
Jun
5
comment A pointless circle in HoTT
What is your definition of "inhabited by"?
Jun
4
comment Source of quotation about the waste-baskets of physicists
Well to have been more accurately (R.I.P.)
May
5
comment Is GL2( R ) - > PGL2( R ) surjective?
In general the map will be surjective when Pic(R) is trivial. Brian Conrad's homework on group schemes walks you through this to a certain extent. If R as a Dedekind domain you can think of the elements of $PGL_n(R)$ as being pseudomatrices of fractional ideals all of whose $n$-fold products which go into the determinant are principal. If the class group is trivial, then all the entries have to be principal anyway and you're left with a standard matrix in $GL_n(R)$ up to unit multiple in $R$.
Apr
24
comment Spicing up Riemann surfaces course (revised)
What's so bland about Riemann Surfaces that requires spicing up?
Apr
12
answered Quadratic twist of an elliptic curve given by non-Weierstrass model
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