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Zev Chonoles's user avatar
Zev Chonoles's user avatar
Zev Chonoles's user avatar
Zev Chonoles
  • Member for 15 years, 1 month
  • Last seen more than a month ago
53 votes
7 answers
14k views

Good lattice theory books?

49 votes
28 answers
8k views

Problems where we can't make a canonical choice, solved by looking at all choices at once

40 votes
4 answers
7k views

Which number fields are monogenic? and related questions

32 votes
7 answers
6k views

Consequences of not requiring ring homomorphisms to be unital?

30 votes
5 answers
8k views

Intuitive explanation of Burnside's Lemma

28 votes
5 answers
3k views

MaxSpec, Spec, ... "RadSpec"? Or, why not look at all radical ideals?

24 votes
1 answer
2k views

Can Eisenstein's lattice point proof of quadratic reciprocity be generalized?

20 votes
3 answers
913 views

Extending arithmetic functions to groups

19 votes
7 answers
2k views

Generalizations of "standard" calculus

19 votes
2 answers
838 views

Allowing $G$-CW complexes to have more general cells

18 votes
1 answer
1k views

Kuratowski closure-complement problem for other mathematical objects?

17 votes
2 answers
2k views

How badly can Krull's Hauptidealsatz fail for non-Noetherian rings?

17 votes
4 answers
3k views

measure spaces as presheaves?

14 votes
3 answers
872 views

How can we realize different combinatorial objects as the dimension of a construction on vector spaces? Are the resulting algebras useful?

13 votes
2 answers
2k views

Are the field norm and trace the unique "nice" maps between fields?

12 votes
2 answers
1k views

Where are we working when we prove metamathematical theorems?

12 votes
2 answers
1k views

Factoring a field extension into one which adds no roots of unity, followed by one which adds only roots of unity

11 votes
3 answers
4k views

If K/k is a finite normal extension of fields, is there always an intermediate field F such that F/k is purely inseparable and K/F is separable?

11 votes
2 answers
470 views

Localizing at the primitive polynomials?

9 votes
2 answers
4k views

What is the automorphism group of the additive group of the p-adic integers?

9 votes
2 answers
460 views

Converse to basic result on prime decomposition

8 votes
2 answers
2k views

Can we relate Cech cohomology and derived functor cohomology even when the cover we choose isn't nice?

8 votes
3 answers
2k views

When does the group of invertible ideal quotients = the free abelian group on the prime ideals?

8 votes
1 answer
475 views

Can minimal surfaces be characterized by some universal property?

7 votes
5 answers
1k views

Which R-algebras are the group ring of some group over a ring R?

7 votes
2 answers
590 views

The natural inclusion of an infinite abelian group $G$ into $\widehat{\widehat{G}}$

7 votes
3 answers
481 views

Slightly weakened / altered concepts of a field

6 votes
1 answer
222 views

Example of a $G$-sphere that is not a $G$-representation sphere

6 votes
1 answer
2k views

Gamma function versions of combinatorial identites?

6 votes
11 answers
3k views

Various concepts of "closure" or "completion" in mathematics