198 reputation
10
bio website
location
age
visits member for 2 years, 5 months
seen May 28 at 13:34

Jul
27
comment Counting the number of binary partitions of k elements
interesting equivalent perspective. I was looking for it as well. I wonder if there is not a more radically different interpretation. for instance geometrical : this is the number of separating hyperplanes in R^k
Jul
27
asked Counting the number of binary partitions of k elements
Jun
9
comment rth adjugate matrix and determinant of a sum, in Horn
interesting video on wedge stuff here. youtube.com/watch?v=uINebibjR5I
Jun
9
revised rth adjugate matrix and determinant of a sum, in Horn
added 686 characters in body
Jun
8
comment rth adjugate matrix and determinant of a sum, in Horn
i realize it might be too narrow a question, as this notion does not seem widespread.
Jun
8
comment rth adjugate matrix and determinant of a sum, in Horn
(for the compound matrix, it seems the same is used in wikipedia, which we all agree is the reference ;) ) en.wikipedia.org/wiki/Compound_matrix
Jun
8
comment rth adjugate matrix and determinant of a sum, in Horn
intesting, would you have a link for the wedge product approach ?
Jun
8
asked rth adjugate matrix and determinant of a sum, in Horn
Apr
24
revised why do we use 'non-increasing' instead of decreasing?
added 250 characters in body
Dec
31
comment lower semicontinuity and closed graph
yeah, i spotted other weird stuff in the article in reference. not to be taken as a reference !
Dec
31
accepted lower semicontinuity and closed graph
Dec
31
asked lower semicontinuity and closed graph
Dec
31
accepted limit inferior and subsequence
Dec
31
comment limit inferior and subsequence
Makes sense. And now that you point at it i remember thinking vaguely the subsequence def was fishy while writing it. Thanks !
Dec
30
revised limit inferior and subsequence
edited title
Dec
30
asked limit inferior and subsequence
Dec
26
awarded  Supporter
Dec
26
comment Why is $\log(\sqrt{x^2+1}+x)$ odd?
that's why I love math
Oct
20
awarded  Critic
Oct
20
comment Does Pi contain all possible number combinations?
why would you care, really... there are so many interesting problems, why this one..