User KConrad - MathOverflow

87 votes

8 answers

16k views

Why is Lebesgue integration taught using positive and negative parts of functions?

asked May 18, 2010 at 18:29

62 votes

4 answers

10k views

who fixed the topology on ideles?

asked Oct 6, 2010 at 10:34

39 votes

3 answers

2k views

Definitive source about Dirichlet finally proving the Unit Theorem in the Sistine Chapel

asked Sep 2, 2012 at 19:22

33 votes

2 answers

2k views

First use of term "Hilbert's Nullstellensatz"

asked May 2, 2021 at 15:40

28 votes

2 answers

1k views

What are applications of commutativity theorems for rings?

asked May 27, 2015 at 16:51

28 votes

3 answers

3k views

Why is "h" the notation for class numbers?

asked Mar 4, 2010 at 6:27

27 votes

3 answers

1k views

Graduate program applications that require questionnaires and other non-letter material

asked Dec 17, 2014 at 4:50

23 votes

1 answer

2k views

Wanted: Quadratic Space in Characteristic 2 as a Counterexample to a Theorem of Arf

asked Apr 18, 2010 at 4:19

20 votes

3 answers

3k views

Galois Bicentennial?

asked Mar 22, 2011 at 9:11

19 votes

6 answers

6k views

an engineering Ph.D. teaching math in college

asked Sep 8, 2010 at 21:46

18 votes

1 answer

1k views

Are there non-reflexive abelian topological groups isomorphic to their second dual?

asked Nov 11, 2010 at 15:40

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11 Questions

Why is Lebesgue integration taught using positive and negative parts of functions?

who fixed the topology on ideles?

Definitive source about Dirichlet finally proving the Unit Theorem in the Sistine Chapel

First use of term "Hilbert's Nullstellensatz"

What are applications of commutativity theorems for rings?

Why is "h" the notation for class numbers?

Graduate program applications that require questionnaires and other non-letter material

Wanted: Quadratic Space in Characteristic 2 as a Counterexample to a Theorem of Arf

Galois Bicentennial?

an engineering Ph.D. teaching math in college

Are there non-reflexive abelian topological groups isomorphic to their second dual?