User Daniel Barter

47 votes

Nontrivial theorems with trivial proofs

answered Jun 20, 2010 at 1:15

12 votes

Tannakian Formalism for the Quaternions and Dihedral Group

answered Sep 29, 2017 at 3:57

10 votes

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

answered Jun 27, 2010 at 3:57

8 votes

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

answered Jun 14, 2010 at 22:08

7 votes

Easy to state applications of dimension theory in algebraic geometry

answered Feb 21, 2014 at 13:08

7 votes

Accepted

What is the point of pointwise Kan extensions?

answered Oct 17, 2015 at 14:13

7 votes

Accepted

Fusion Rules for Quantum Groups

answered Nov 1, 2016 at 14:28

6 votes

Hessian as a tensor, multi-dimensional taylor series, and generalizations

answered May 19, 2016 at 13:27

6 votes

Accepted

Generalization of Drinfeld double to comodule algebras

answered Sep 10, 2018 at 22:40

5 votes

Representation theory and elementary particles

answered Mar 16, 2017 at 19:08

5 votes

Strategies for proving a category is Noetherian?

answered May 5, 2015 at 16:49

5 votes

Intuition behind basic facts about homogeneous ideals?

answered Aug 4, 2015 at 2:28

4 votes

Accepted

Symmetric invariants of a Schur Module

answered Jul 20, 2014 at 0:33

4 votes

Question about the spec and global section functors

answered Mar 8, 2011 at 9:24

3 votes

How should I be thinking about object classifiers / universal fibrations / universes?

answered Jul 18, 2014 at 17:12

2 votes

2TQFT and commutative Frobenius algebras

answered Sep 18, 2017 at 23:54

2 votes

Lingering foundational question about sheaves of abelian groups

answered Aug 30, 2013 at 18:10

2 votes

Distance metric on the unit sphere in R^3?

answered Jun 23, 2010 at 21:30

2 votes

Breaking up the free Lie algebra into GL irreps

answered Nov 19, 2014 at 15:20

1 vote

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

answered Apr 21, 2014 at 11:19

1 vote

In general, are 'Young symmetrisers' given by Littlewood-Richardson 'Orthogonal projection Operators'?

answered Aug 4, 2015 at 13:12

1 vote

When is the Thom class the Poincare dual of the zero section?

answered Aug 10, 2015 at 14:39

1 vote

Giving $\mathit{Top}(X,Y)$ an appropriate topology

answered Apr 17, 2013 at 15:55

0 votes

What is the meaning of "algebraic construction", and how could this be used in algebraic geometry

answered Jul 18, 2013 at 13:35

0 votes

motivation for compactness

answered Jun 30, 2010 at 7:08

Stack Exchange Network

25 Answers

Nontrivial theorems with trivial proofs

Tannakian Formalism for the Quaternions and Dihedral Group

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

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

Easy to state applications of dimension theory in algebraic geometry

What is the point of pointwise Kan extensions?

Fusion Rules for Quantum Groups

Hessian as a tensor, multi-dimensional taylor series, and generalizations

Generalization of Drinfeld double to comodule algebras

Representation theory and elementary particles

Strategies for proving a category is Noetherian?

Intuition behind basic facts about homogeneous ideals?

Symmetric invariants of a Schur Module

Question about the spec and global section functors

How should I be thinking about object classifiers / universal fibrations / universes?

2TQFT and commutative Frobenius algebras

Lingering foundational question about sheaves of abelian groups

Distance metric on the unit sphere in R^3?

Breaking up the free Lie algebra into GL irreps

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

In general, are 'Young symmetrisers' given by Littlewood-Richardson 'Orthogonal projection Operators'?

When is the Thom class the Poincare dual of the zero section?

Giving $\mathit{Top}(X,Y)$ an appropriate topology

What is the meaning of "algebraic construction", and how could this be used in algebraic geometry

motivation for compactness