Andrew Critch

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Name Andrew Critch
Member for 2 years
Seen Apr 13 at 3:41
Website
Location UC Berkeley
Age 25
Education:

2004-2006: Memorial University (BSc)
2006-2008: University of Toronto (MSc)
2008-201?: UC Berkeley (PhD)

See my homepage at Berkeley for more info :)

28

Questions
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What’s a non-abelian totally ordered group?

nov 10 09 at 16:48 Danny Calegari 1,667●4●11

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33

Answers
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57
Why are flat morphisms “flat?”
28
Why is it a good idea to study a ring by studying its modules?
27
Why do Groups and Abelian Groups feel so different?
17
What is a section?
14
What is an intuitive view of adjoints? (version 1: category theory)
13
Finite type/finite morphism
11
What should be learned in a first serious schemes course?
9
How is it that you can guess if one of a pair of random numbers is larger with probability > 1/2?
9
How do I check if a functor has a (left/right) adjoint?
9
Motivating the Laplace transform definition
6
Category theory sans (much) motivation?
6
What representative examples of modules should I keep in mind?
6
Cogroup Objects
6
When does “splits” imply “cosplits”?
5
Sheaf cohomology and injective resolutions
5
Does Cantor-Bernstein hold for classes?
5
Freeing a sphere from within a sphere
4
How can I really motivate the Zariski topology on a scheme?
4
What do models where the CH is false look like?
4
Non-quasi separated morphisms
3
Assumptions on the category C for sheafification of C-valued presheaves
3
What are the Benefits of Using Algebraic Spaces over Schemes?
2
Minimal axiom system for a set of provable statements
2
When to pick a basis?
2
Elementary solutions to f(z+1)-f(z)=g(z) in entire functions
2
What is the base change in number theory?
2
Nature of Invertible Sheaves in which there are no global sections.
2
Differentiable function germs on differentiable manifolds
2
dimension of a real affine variety
1
Can adjoint linear transformations be naturally realized as adjoint functors?
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