Mathematics
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Jay's user avatar
Jay
  • Member for 11 years, 5 months
  • Last seen more than a week ago
  • Minneapolis, MN
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About

I am interested in closure systems. I think of them as generalizations of the convex hull operation rather than a generalization of closure in topology. See: http://www.ams.org/meetings/sectional/1058-52-28.pdf

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28
Why don't people vote for posts any more?
Nov 14, 2013
answer
25
Reputation points for less elementary questions and answers are low
Dec 29, 2012
answer
16
discrepancies between skills and ambitions
Jul 20, 2011
answer
11
No offense intended, but...
May 14, 2013
question
10
What new users see when they wish to learn how to ask questions.
May 28, 2013
answer
10
How to ask a question not related to my area?
Mar 5, 2014
question
8
How do I log out from the new interface?
Dec 6, 2013
answer
8
Large number of self-answered questions permissible?
Jul 25, 2013
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6
How to increase service/traffic, a set of suggestions
Jun 6, 2012
question
6
Reputation for editing tags
Jun 25, 2011
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28
How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
15
Is there any conjecture that has been proved to be solvable/provable but whose direct solution/proof is not yet known?
13
Is The *Mona Lisa* in the complement of the Mandelbrot set.
9
Complete lattices and sublattices – which requirement is more stringent?
8
Showing that a set X with a trivial topology is not metrizable

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