User Jonathan Wise

83 votes

Never appeared forthcoming papers

answered Dec 8, 2010 at 8:53

40 votes

Accepted

A proof of the salamander lemma without Mitchell's embedding theorem?

answered Dec 2, 2009 at 0:28

38 votes

Accepted

Arbitrary products of schemes don't exist, do they?

answered Dec 17, 2009 at 8:33

37 votes

Intuition about the cotangent complex?

answered Nov 10, 2009 at 6:57

32 votes

The importance of EGA and SGA for "students of today"

answered Oct 28, 2009 at 18:03

28 votes

Accepted

Deformation theory of representations of an algebraic group

answered Oct 29, 2009 at 2:07

23 votes

Periods and commas in mathematical writing

answered Nov 25, 2009 at 2:55

22 votes

Accepted

Why is this not an algebraic space?

answered Dec 15, 2009 at 21:29

16 votes

Geometric meaning of the Euler sequence on $\mathbb{P}^n$ (Example 8.20.1 in Ch II of Hartshorne)

answered Nov 13, 2009 at 11:33

16 votes

Why are derived categories natural places to do deformation theory?

answered Dec 27, 2012 at 8:42

16 votes

Conceptualizing Weil Pairing for elliptic curves ( and number fields)

answered Mar 24, 2013 at 5:52

14 votes

Accepted

Negative Gromov-Witten invariants

answered Dec 5, 2009 at 5:23

14 votes

Assumptions on the category C for sheafification of C-valued presheaves

answered Nov 7, 2009 at 3:09

14 votes

Accepted

Infinite products exist only for affine schemes?

answered May 25, 2011 at 3:17

13 votes

equivalence of Grothendieck-style versus Cech-style sheaf cohomology

answered Nov 5, 2009 at 7:00

12 votes

to what extent does the category Cov(X) determine a topological space X?

answered Jun 6, 2011 at 19:39

11 votes

Accepted

Is Illusie's generalization of the cotangent complex to arbitrary ringed toposes necessary in algebraic geometry?

answered Nov 13, 2010 at 17:37

11 votes

Is the functor of open subschemes representable?

answered Apr 11, 2010 at 3:31

11 votes

Commutative rings to algebraic spaces in one jump?

answered Feb 7, 2010 at 18:31

11 votes

Universal property of the tangent bundle

answered Mar 12, 2014 at 23:22

10 votes

Blackboard rendering of math fonts

answered Nov 17, 2009 at 21:40

9 votes

Can a vector space over an infinite field be a finite union of proper subspaces?

answered Oct 1, 2009 at 4:03

9 votes

Accepted

A technical question about derivations of sheaves on group schemes

answered Dec 9, 2009 at 19:12

9 votes

Accepted

Essential geometric morphisms on the étale site.

answered Mar 5, 2013 at 6:33

8 votes

Why is a topology made up of 'open' sets?

answered Jul 1, 2010 at 22:50

8 votes

What is an example of a presheaf P where P^+ is not a sheaf, only a separated presheaf?

answered Oct 31, 2009 at 5:20

7 votes

examples of moduli functors for which coarse moduli space does not exists

answered Feb 9, 2013 at 22:29

7 votes

Accepted

$Pic$ of the stack of elliptic curves vs. $Pic$ of the coarse space

answered Nov 7, 2013 at 4:13

6 votes

algebraization theorems

answered Jun 5, 2014 at 15:59

6 votes

Accepted

Local model of virtual fundamental cycle

answered Feb 17, 2013 at 17:35

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51 Answers

Never appeared forthcoming papers

A proof of the salamander lemma without Mitchell's embedding theorem?

Arbitrary products of schemes don't exist, do they?

Intuition about the cotangent complex?

The importance of EGA and SGA for "students of today"

Deformation theory of representations of an algebraic group

Periods and commas in mathematical writing

Why is this not an algebraic space?

Geometric meaning of the Euler sequence on $\mathbb{P}^n$ (Example 8.20.1 in Ch II of Hartshorne)

Why are derived categories natural places to do deformation theory?

Conceptualizing Weil Pairing for elliptic curves ( and number fields)

Negative Gromov-Witten invariants

Assumptions on the category C for sheafification of C-valued presheaves

Infinite products exist only for affine schemes?

equivalence of Grothendieck-style versus Cech-style sheaf cohomology

to what extent does the category Cov(X) determine a topological space X?

Is Illusie's generalization of the cotangent complex to arbitrary ringed toposes necessary in algebraic geometry?

Is the functor of open subschemes representable?

Commutative rings to algebraic spaces in one jump?

Universal property of the tangent bundle

Blackboard rendering of math fonts

Can a vector space over an infinite field be a finite union of proper subspaces?

A technical question about derivations of sheaves on group schemes

Essential geometric morphisms on the étale site.

Why is a topology made up of 'open' sets?

What is an example of a presheaf P where P^+ is not a sheaf, only a separated presheaf?

examples of moduli functors for which coarse moduli space does not exists

$Pic$ of the stack of elliptic curves vs. $Pic$ of the coarse space

algebraization theorems

Local model of virtual fundamental cycle