MathOverflow will be down for maintenance for approximately 3 hours, starting Monday evening (06/24/2013) at approximately 9:00 PM Eastern time (UTC-4).

Jason Starr

1,935

Reputation

2156 views

Registered User

Name	Jason Starr
Member for	3 years
Seen	39 mins ago
Website	math.sunysb.edu/~jstarr/index.html
Location	Stony Brook University, Stony Brook, NY USA
Age

stats recent reputation favorites

0

Questions

103

Answers

votes newest views recent

before taking on a graduate student

Examples of great mathematical writing

Can every curve be written as $f(x)=g(y)$?

Existence of zero cycles of degree one vs existence of rational points

Which functor does the blowing up represent?

what is the cyclic cover trick?

Global sections of flat scheme also flat?

A little help with the unmixedness theorem?

Lifting to Characteristic 0 not over W

Natural coherent sheaves on algebraic varieties

Does finite+reduced fibers+connected fibers imply isomorphism?

Are abelian varieties degree two covers of some projective space

Hasse principle for high dimensional varieties

Tensor product of sheaves separated?

Automorphisms of $SL_n$ as a variety

If $X$ is a smooth and proper stack, does it admit a smooth and proper atlas?

Characteristic zero and characteristic $p$ in algebraic geometry

extension of $G$-bundles (2)

Examples of nice reduced singularities on Hilbert schemes--Edited

Monodromy of covering map related to symmetric group

Can the valuative criteria be checked “on a dense open”?

Fundamental groups of Calabi-Yau varieties

Ideals of affine space curves

Equations of the Hirzebruch surface embedded in a large space.

Quotients of rational surfaces

Determinant of coherent sheaves

Is the cup product of holomorphic $n$-forms with a fixed class injective?

Are the global sections of a vector bundle a projective module?

What is the Brauer group of the moduli space of (p.p.) abelian varieties?

Is this function field extension a Galois extension ?

138

Votes

137

1

70

Tags

ag.algebraic-geometry× 92
reference-request× 8
ac.commutative-algebra× 8
moduli-spaces× 6
deformation-theory× 6
complex-geometry× 6
stacks× 5
arithmetic-geometry× 5
algebraic-groups× 5
cv.complex-variables× 4

birational-geometry× 4
ra.rings-and-algebras× 3
hilbert-schemes× 3
big-list× 3
algebraic-surfaces× 3
soft-question× 2
singularity-theory× 2
nt.number-theory× 2
linear-algebra× 2
hilbert-spaces× 2

gromov-witten-theory× 2
differential-topology× 2
dg.differential-geometry× 2
coherent-sheaves× 2
characteristic-p× 2
branched-covers× 2
blow-ups× 2
algebraic-stacks× 2
algebraic-curves× 2
abelian-varieties× 2

writing
valuative-criteria
torus-action
toric-varieties
sheaves
sheaf-theory
sg.symplectic-geometry
schemes
rational-points
rational-functions

rational-curves
projective-resolution
projective-module
primitive-ideal
polynomials
normalization
noncommutative-algebra
invariant-theory
gt.geometric-topology
gr.group-theory

23

Badges

● Nice Answer× 9
● Necromancer
● Enlightened× 2

● Yearling× 3
● Good Answer
● Mortarboard

● Enthusiast
● Critic
● Editor

● Commentator
● Supporter
● Teacher