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Michael's user avatar
Michael
  • Member for 13 years, 5 months
  • Last seen more than a week ago
  • Canada
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11
Does the generator of a 1-parameter group of Banach space isometries know which elements are entire?
Jan 30, 2014
7
Wanted: chain of nowhere dense subsets of the real line whose union is nonmeagre, or even contains intervals
Jan 17, 2011
7
Does the suspension isomorphism $K_1(A) \to K_0(SA)$ descend from a more refined invariant?
Jul 23, 2013
7
Dense ideals in C*-algebras and K-theory
May 1, 2014
7
Why is a topology made up of 'open' sets?
Dec 3, 2011
6
C*-Algebras: Dynamics vs. Derivations
Nov 18, 2014
5
automorphisms of C*-algebras and partial isometries
Jul 30, 2013
4
Unions of chains closed under finite unions? Under unions of chains?
Jan 18, 2011
4
Are submersions of differentiable manifolds flat morphisms?
Jul 28, 2019
3
Does the generator of a 1-parameter group of Banach space isometries know which elements are entire?
Feb 6, 2014
Top network posts
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59
What is the total sum of the cardinalities of all subsets of a set?
58
Collection of surprising identities and equations.
47
Are continuous self-bijections of connected spaces homeomorphisms?
43
Meaning of the identity $\det(A+B)+\text{tr}(AB) = \det(A)+\det(B) + \text{tr}(A)\text{tr}(B)$ (in dimension $2$)
42
If a continuous function is positive on the rationals, is it positive almost everywhere?