Daniel Barter

Member for 14 years, 10 months
Last seen this week

danielbarter.github.io

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rt.representation-theory

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Questions

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27

Varieties as an introduction to algebraic geometry / How do professional algebraic geometers think about varieties

Oct 21, 2010

16

Under what circumstances do morphisms on the stalks of a sheaf induce a sheaf morphism

Jan 12, 2011

13

In an arbitrary abelian category, does chain complex homology commute with coproduct?

Sep 18, 2011

11

The metric space associated to a measure space

Nov 4, 2011

10

Inverse Image as the left adjoint to pushforward

Apr 14, 2011

Answers

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47

Nontrivial theorems with trivial proofs

Jun 20, 2010

12

Tannakian Formalism for the Quaternions and Dihedral Group

Sep 29, 2017

10

What are the most elegant proofs that you have learned from MO?

Jun 27, 2010

8

A Learning Roadmap request: From high-school to mid-undergraduate studies

Jun 14, 2010

7

Easy to state applications of dimension theory in algebraic geometry

Feb 21, 2014

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rt.representation-theory

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The metric space associated to a measure space

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Is an injective smooth map an immersion?

+10

Representations of parabolic subgroups of the general linear group over the complex numbers

+10

Why can't there be a problem both in P and NPC

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