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Garabed Gulbenkian's user avatar
Garabed Gulbenkian's user avatar
Garabed Gulbenkian's user avatar
Garabed Gulbenkian
  • Member for 14 years, 4 months
  • Last seen more than 7 years ago
48 votes
5 answers
5k views

Is Lebesgue's "universal covering" problem still open?

42 votes
2 answers
6k views

A question about ordinal definable real numbers

31 votes
3 answers
6k views

Is there a good argument for why you can't place 4 queens which cover a chessboard?

20 votes
3 answers
1k views

How thinly connected can a closed subset of Hilbert space be?

14 votes
3 answers
2k views

The status of 'the consistency of NF relative to ZF'

13 votes
2 answers
915 views

Can the circle be characterized by the following property?

11 votes
1 answer
744 views

A question about definable non-empty sets containing no definable elements.

11 votes
1 answer
447 views

How much of general topology can be developed by taking the notion of "connected set" as the sole topological primitive

10 votes
1 answer
436 views

A question about tiling Hilbert Space

9 votes
4 answers
2k views

A question about J.H. Conway's SURREAL NUMBERS

9 votes
2 answers
3k views

A question about Second-Order ZFC and the Continuum Hypothesis

9 votes
2 answers
1k views

A question about the Osgood curve

9 votes
2 answers
532 views

A question about the dispersion points of connected metric spaces

8 votes
4 answers
738 views

A question about local connectedness

8 votes
2 answers
514 views

A question about tilings of the plane

8 votes
4 answers
1k views

Does there exist a non-trivial Ultrafinitist set theory?

8 votes
1 answer
780 views

A question about Quine's set theory NF.

8 votes
2 answers
426 views

A question about the Ordinal Definable elements of Power Sets

8 votes
1 answer
1k views

A question about the Axiom of Choice

7 votes
2 answers
380 views

A question about a question about 3-dimensional convex bodies

7 votes
0 answers
336 views

A question about cardinal numbers when the Axiom of Choice is absent

7 votes
1 answer
479 views

A question about the comparability of large cardinals.

7 votes
3 answers
1k views

A question about Universal sets.

7 votes
2 answers
2k views

A question about fields of real numbers

6 votes
1 answer
671 views

A question about large denumerable ordinal numbers

6 votes
2 answers
812 views

A question about well ordered subsets of totally ordered countable sets

6 votes
5 answers
918 views

A question about local connectedness in metric spaces

6 votes
1 answer
180 views

A question about simple closed plane polygons

6 votes
0 answers
607 views

A question about Paraconsistent Set Theory and the Continuum Hypothesis

5 votes
2 answers
889 views

A question about "small" uncountable cardinal numbers

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