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mathematrucker
  • Member for 12 years
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12 votes
1 answer
196 views

How many natural numbers are needed to generate 14 distinct subsets under complement and multiplicative closure?

5 votes
1 answer
158 views

Kuratowski closure-complement question involving unions and intersections

4 votes
2 answers
55 views

Does every finite topological space map to a family of pairwise disjoint subsets of the reals under the usual topology with closure preserved?

4 votes
1 answer
47 views

Does every finite partition of a topological space have a finite refinement such that the closure of every block is a union of blocks?

4 votes
1 answer
54 views

Does there exist a subset in a 2-topological space that generates 63 distinct sets under closures-interiors-identity?

3 votes
0 answers
30 views

Does any topology-defining set operator distribute over symmetric difference?

3 votes
2 answers
148 views

Kuratowski closure-interior families in a given topological space

3 votes
0 answers
58 views

Does this weak distinguishing relation among sets have a name?

3 votes
1 answer
330 views

Is every cyclic polygon convex?

2 votes
0 answers
86 views

Minimal generating sub-relation of complement of partial order

2 votes
1 answer
87 views

When is the union of two locally closed subsets locally closed? [closed]

1 vote
1 answer
71 views

does this counting property have a name?

1 vote
0 answers
39 views

How to compute all equivalence classes of weight assignments to the vertices of a poset on n points that sum to m?

0 votes
2 answers
60 views

does this implication relation induced by a subset of the power set have a name?

0 votes
0 answers
20 views

diagramming a poset of rectangles