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Just Some Old Man's user avatar
Just Some Old Man's user avatar
Just Some Old Man's user avatar
Just Some Old Man
  • Member for 11 years, 3 months
  • Last seen this week
26 votes
8 answers
8k views

LaTeX/TeX Vs. Mathematica for Typesetting [closed]

23 votes
4 answers
826 views

Why are particular combinations of algebraic properties "richer" than others?

21 votes
8 answers
1k views

Intuition for a physical real line vs. a physical "hyperreal line"

9 votes
2 answers
377 views

Is transfinite induction needed to remove all the elements from an uncountable set?

8 votes
3 answers
5k views

Limits are additive, but suprema and infima aren't?

6 votes
3 answers
3k views

Must a Borel set B of nonzero measure contain an interval as a subset?

4 votes
0 answers
241 views

Infinite Chain of Implication Statements - Can it have a Conclusion?

4 votes
1 answer
395 views

Understanding Basic Categorical Duality with an Example from Group Theory

4 votes
1 answer
365 views

From Primitive Recursive to Recursive by Iterating over more than one Argument?

3 votes
1 answer
212 views

Similarity of Infinite Direct Sums Vs. Infinite Direct Products Across Categories

3 votes
3 answers
2k views

Properties of Mertens Function

2 votes
1 answer
88 views

Statements true for all n Vs. statements true as n->infty

2 votes
2 answers
212 views

Subgroups of order $125$ in $S_{15}$

2 votes
1 answer
448 views

Basic question on bounded linear operators in Banach spaces.

2 votes
1 answer
128 views

Finding a closed curve $\gamma$ on a Torus such that $\gamma$ is not pseudo-Anosov

2 votes
1 answer
588 views

Quotient Rings of Polynomials Over Rings that are NOT fields

1 vote
0 answers
118 views

Expressing a sum over the sizes of the parts of every partition of n

0 votes
1 answer
341 views

Weak Representability and Derivability Condition 1

0 votes
3 answers
130 views

Very simple. What is wrong with this chain of limit equalities?