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Dec
9
comment Norm of covariance and precision matrices: is there any meaning?
Good answer, but I am actually more interested in the precision matrix case.
Dec
6
comment Maximum entry of small-normed matrix
And I was referring to the spectral norm.
Dec
6
revised Maximum entry of small-normed matrix
added 47 characters in body
Dec
6
asked Maximum entry of small-normed matrix
Dec
4
comment Are roots of a sparse matrix are sparse?
I didn't say anything about diagonal matrices.
Dec
4
revised Are roots of a sparse matrix are sparse?
edited body
Dec
4
asked Are roots of a sparse matrix are sparse?
Dec
3
asked Norm of covariance and precision matrices: is there any meaning?
Dec
3
asked What exactly is a Pettis integral? An example using covariance.
Dec
3
accepted “max” entry norm inequality?
Dec
2
accepted Norm inequality question
Dec
2
revised Norm inequality question
added 146 characters in body
Dec
2
comment Norm inequality question
I am not saying that we should have an equality, just some reasonable perturbation of this $\epsilon$, perhaps involving the norm of $T$.
Dec
2
asked Norm inequality question
Dec
2
awarded  Good Answer
Dec
2
answered How to improve concentration when beginning to work on a math problem that seems boring?
Dec
1
comment “max” entry norm inequality?
For the 2 norm I think you need a factor of $\sqrt{n}$ in front of it, by the relationship of the 2 norm and infinity norm.
Dec
1
comment “max” entry norm inequality?
@AlgebraicPavel, the spectral norm. But perhaps a more sensible bound is a multiple of the infinity norm?
Dec
1
revised “max” entry norm inequality?
added 47 characters in body
Dec
1
asked “max” entry norm inequality?