User Charles Matthews

65 votes

Teaching proofs in the era of Google

answered Oct 9, 2010 at 7:01

33 votes

What is the proper initiation to the theory of motives for a new student of algebraic geometry?

answered Jun 20, 2010 at 9:17

28 votes

Accepted

Origin of terms "flag", "flag manifold", "flag variety"?

answered Mar 13, 2011 at 19:23

27 votes

Why is the Hodge Conjecture so important?

answered Feb 3, 2011 at 15:19

26 votes

Gauss's views on pure mathematics

answered Apr 23, 2012 at 8:38

24 votes

What elementary problems can you solve with schemes?

answered Mar 22, 2011 at 8:57

22 votes

How to motivate and present epsilon-delta proofs to undergraduates?

answered Feb 15, 2012 at 20:22

21 votes

Accepted

How to understand the concept of compact space

answered May 26, 2010 at 9:32

18 votes

What is sheaf cohomology intuitively?

answered Sep 16, 2010 at 20:29

18 votes

Accepted

The multiplicative order of 2 modulo primes

answered Apr 3, 2011 at 16:08

17 votes

prime powers between n and 2n

answered Apr 27, 2011 at 18:03

17 votes

When have we lost a body of mathematics because errors were found?

answered May 10, 2012 at 7:53

17 votes

Is there a "crash-course" book on Abelian varieties (e.g., an introduction for physicists)?

answered Jan 5, 2011 at 15:31

17 votes

Why were Abelian functions so important in the 19th century?

answered May 31, 2010 at 10:18

16 votes

To what extent is it true that "number theory = mathematics"?

answered May 29, 2010 at 8:06

15 votes

Accepted

4900, a particularly square number

answered May 31, 2010 at 8:55

15 votes

Au revoir, law of excluded middle?

answered May 20, 2010 at 16:56

14 votes

What is the situation with Hilbert's Fifth Problem?

answered Jul 11, 2010 at 10:33

14 votes

Accepted

When is a ring the ring of adeles of some global field

answered Apr 9, 2011 at 16:59

13 votes

Accepted

Ado's Theorem Proof

answered Apr 19, 2011 at 9:44

13 votes

Elementary examples of the Weil conjectures

answered Jan 2, 2013 at 22:27

13 votes

Theorems which say "such and such method cannot possibly prove FLT"

answered Jul 13, 2010 at 11:04

13 votes

Gossip about Grothendieck and distributive lattices

answered Sep 19, 2010 at 8:28

13 votes

What is your favorite isomorphism?

answered Sep 2, 2010 at 19:10

12 votes

Accepted

To what extent can algorithms in undergraduate linear algebra be made continuous/polynomial/etc.?

answered Sep 6, 2010 at 8:25

12 votes

Approaches to Riemann hypothesis using methods outside number theory

answered Aug 6, 2010 at 8:01

12 votes

Tensor product and category theory

answered Jul 14, 2010 at 13:51

12 votes

Is Algebraic Geometry really natural?

answered Jan 29, 2012 at 19:39

11 votes

Grothendieck on topological vector spaces

answered Mar 10, 2012 at 21:52

11 votes

Where do all these projection formulas come from?

answered Jun 8, 2011 at 10:34

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256 Answers

Teaching proofs in the era of Google

What is the proper initiation to the theory of motives for a new student of algebraic geometry?

Origin of terms "flag", "flag manifold", "flag variety"?

Why is the Hodge Conjecture so important?

Gauss's views on pure mathematics

What elementary problems can you solve with schemes?

How to motivate and present epsilon-delta proofs to undergraduates?

How to understand the concept of compact space

What is sheaf cohomology intuitively?

The multiplicative order of 2 modulo primes

prime powers between n and 2n

When have we lost a body of mathematics because errors were found?

Is there a "crash-course" book on Abelian varieties (e.g., an introduction for physicists)?

Why were Abelian functions so important in the 19th century?

To what extent is it true that "number theory = mathematics"?

4900, a particularly square number

Au revoir, law of excluded middle?

What is the situation with Hilbert's Fifth Problem?

When is a ring the ring of adeles of some global field

Ado's Theorem Proof

Elementary examples of the Weil conjectures

Theorems which say "such and such method cannot possibly prove FLT"

Gossip about Grothendieck and distributive lattices

What is your favorite isomorphism?

To what extent can algorithms in undergraduate linear algebra be made continuous/polynomial/etc.?

Approaches to Riemann hypothesis using methods outside number theory

Tensor product and category theory

Is Algebraic Geometry really natural?

Grothendieck on topological vector spaces

Where do all these projection formulas come from?