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Jay
  • Member for 11 years, 3 months
  • Last seen this week
  • Minneapolis, MN
13 votes
2 answers
859 views

Is The *Mona Lisa* in the complement of the Mandelbrot set.

5 votes
3 answers
216 views

Is there an alternate definition for $\{ z \in \mathbb{C} \colon \vert z \vert \leq 1 \} $.

5 votes
2 answers
302 views

Are there logarithm functions for arbitrary rings?

3 votes
1 answer
209 views

Is there a name for this type of binary relation?

3 votes
1 answer
30 views

Is There A Name For This Type Of Partially Ordered Set

2 votes
1 answer
48 views

Is there a name for dividing a set into pieces, some of which may be empty?

2 votes
1 answer
216 views

The Structure Of Weirdness in ZF + $\neg$ AC

1 vote
1 answer
142 views

Is there a name for this lattice theoretic property?

0 votes
1 answer
99 views

Are there necessary and sufficient conditions so that every element in a partially ordered set is either the least element or in the upset of an atom?

0 votes
1 answer
52 views

Conditions for augmenting a collection of sets so that the new sets are small but the hull is large?

0 votes
1 answer
190 views

Are there necessary and sufficient conditions for Krein-Milman type conclusions?

0 votes
0 answers
25 views

Is there a name for this weakening of the notion of a well-founded partial order?