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David Corfield's user avatar
David Corfield's user avatar
David Corfield
  • Member for 16 years, 6 months
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40
Direct proof of irrationality?
Jul 15, 2010
36
The set-theoretic multiverse as a (bi)category
Sep 19, 2011
25
whence commutative diagrams?
Jul 8, 2013
25
The concept of duality
Sep 1, 2011
22
When and why do universal objects have extra properties?
Nov 24, 2009
22
What are hypergroups and hyperrings good for?
Jul 2, 2010
20
What would be an infinity-groupoid analogue of the duality between sets and complete atomic boolean algebras?
Jan 20, 2015
17
Essential reads in the philosophy of mathematics and set theory
Apr 18, 2012
17
ADE type Dynkin diagrams
Nov 25, 2009
16
Which languages could appear on Weil's Rosetta Stone?
Sep 8, 2010