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visits member for 1 year, 6 months
seen Apr 13 '13 at 22:06

Jul
2
awarded  Curious
Apr
13
accepted Inner product spaces that are isometrically isomorphic
Apr
13
asked Inner product spaces that are isometrically isomorphic
Mar
10
comment Riemann-Stieltjes integrability question
Thanks, makes perfect sense.
Mar
10
accepted Riemann-Stieltjes integrability question
Mar
9
asked Riemann-Stieltjes integrability question
Jan
30
comment On building a subsequence inductively
Gotcha. You've been a great help Brian.
Jan
30
comment On building a subsequence inductively
Alternatively, if the lim sup of a sequence diverged to $-\infty$, could we prove that this sequence had a subsequence that diverged to $-\infty$ by ensuring that $s_{n_k}$ is less than $k$, for every $k$?
Jan
30
comment On building a subsequence inductively
Oh. I was just misinterpreting your notation. But I think I understand now: you are just saying we should take $n_{k+1}$ to be the smallest integer such that both those conditions are satisfied.
Jan
30
comment On building a subsequence inductively
Hey Brian, I'm a little confused as to why you would take the minimum of those integers in choosing $n_{k+1}$.
Jan
30
accepted On building a subsequence inductively
Jan
29
asked On building a subsequence inductively
Jan
26
awarded  Supporter
Jan
24
comment If $AB=BA$, show that $B$ is diagonalizable.
I understand now. Thank you very much. I just wasn't considering the one dimensionality of the eigenspace. Thank you very much Jonas.
Jan
24
accepted If $AB=BA$, show that $B$ is diagonalizable.
Jan
24
comment If $AB=BA$, show that $B$ is diagonalizable.
Hey Jonas, I still don't understand how it is that if $v$ is an eigenvalue of $A$ corresponding to some eigenvalue $ \lambda $, that $A(Bv)= \lambda Bv$ implies that $v$ is also an eigenvector of $B$. I was wondering if you could clear that up for me. Thanks.
Jan
24
awarded  Scholar
Jan
24
accepted Distance in at most countable metric spaces
Jan
24
asked If $AB=BA$, show that $B$ is diagonalizable.
Jan
18
awarded  Student