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I've asked good questions, and I've asked stupid ones, so bear with me.


11h
comment Compute the Frobenius norm
But L is only given by $L=I-N$ where L is unit lower triangular. How do can I find the Frobenius norm of $L^{-1}$?
14h
awarded  Custodian
14h
reviewed Approve Compute the Frobenius norm
14h
comment Compute the Frobenius norm
yes. L is a unit lower triangular matrix and $L$ is actually given by $L = I - N$ but I don't think that form would help in computing the Frobenius norm of $L^{-1}$, so I tried to write $L^{-1}$ in the above form..
14h
asked Compute the Frobenius norm
17h
comment Properties of the inverse of unit (lower) triangular matrix
Perfect! Thanks
17h
accepted Properties of the inverse of unit (lower) triangular matrix
17h
asked Properties of the inverse of unit (lower) triangular matrix
Jan
26
comment How to prove that the infinity norm of a matrix is the max of row sum?
no i haven't. This is the first time.
Jan
26
asked How to prove that the infinity norm of a matrix is the max of row sum?
Jan
26
accepted How to “compare” vectors?
Jan
26
asked How to “compare” vectors?
Nov
17
awarded  Student
Oct
3
awarded  Autobiographer
Dec
11
asked How to prove perm-power is in P?
Dec
7
awarded  Scholar
Dec
7
comment Summation of odd power
Thanks! why didnt I think of this?!
Dec
7
accepted Summation of odd power
Dec
7
asked Summation of odd power