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arsmath
  • Member for 14 years, 2 months
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73 votes
6 answers
11k views

Still Difficult After All These Years

32 votes
23 answers
7k views

Early two-author math papers

52 votes
5 answers
6k views

Metamathematics of buts

24 votes
2 answers
3k views

Aleph 0 as a large cardinal

12 votes
4 answers
2k views

Axiom of Replacement in Category Theory

6 votes
2 answers
1k views

Commutative Ring of Finite Global Dimension

5 votes
2 answers
1k views

General theory of left-exact localization?

8 votes
0 answers
1k views

Can every set be measurable?

7 votes
2 answers
871 views

Vopenka's Principle at Small Cardinals

9 votes
3 answers
868 views

Self-dual Complete Category

14 votes
1 answer
764 views

The Practical Impact of Set-Theoretic Axioms on Measure Theory

3 votes
1 answer
576 views

Topological Groups and Families of Pseudometrics

4 votes
3 answers
525 views

Replacement and Sets of Natural Numbers

7 votes
1 answer
520 views

Algebraic topology for nonlinear compact operators

8 votes
1 answer
456 views

Small Implications of the Axiom of Replacement

4 votes
0 answers
369 views

Sentences Preserved by Direct Products (including the Empty Product)

3 votes
0 answers
351 views

Using the Affine Maxima Package

7 votes
0 answers
341 views

Is there a theory of algebraic universal algebra?

5 votes
2 answers
312 views

Colimit density and monads

5 votes
0 answers
214 views

Nilpotent Localization in Group Theory

2 votes
0 answers
136 views

Goldie's Theorem for Semigroups

2 votes
1 answer
50 views

Equations satisfied by finite modular lattices