854 reputation
714
bio website math.sunysb.edu/~vpingli
location
age
visits member for 5 years, 2 months
seen 2 days ago
Graduate student at SUNY stony brook (5th year PhD student).

Mar
9
accepted Convexity of a (non-symmetric) function of matrices
Mar
9
comment Convexity of a (non-symmetric) function of matrices
Yes. I forgot to add the assumption of semidefiniteness.
Mar
9
revised Convexity of a (non-symmetric) function of matrices
Added the hypothesis of semidefiniteness.
Mar
9
asked Convexity of a (non-symmetric) function of matrices
Feb
25
accepted Matrix-convexity of inverse of the cofactor matrix
Feb
16
comment Matrix-convexity of inverse of the cofactor matrix
Thanks. It arose in proving uniform estimates for an elliptic Monge-Ampere type PDE.
Feb
13
comment Matrix-convexity of inverse of the cofactor matrix
Indeed. I corrected that.
Feb
13
revised Matrix-convexity of inverse of the cofactor matrix
added 5 characters in body
Feb
13
asked Matrix-convexity of inverse of the cofactor matrix
Feb
9
awarded  Yearling
Feb
9
accepted Convexity of a function of matrices
Feb
9
asked Convexity of a function of matrices
Feb
9
accepted Geometric mean of two matrices
Feb
7
comment Geometric mean of two matrices
Thank you. Unfortunately, case 1 is the more problematic one of the two. This is because $K \neq 0$ cannot be $\leq 0$ (its trace is $0$).
Feb
5
asked Geometric mean of two matrices
Nov
22
comment $L^p$ stability of the Beltrami equation
Thank you very much.
Nov
22
accepted $L^p$ stability of the Beltrami equation
Nov
21
comment $L^p$ stability of the Beltrami equation
Fair enough. Indeed I want them to be uniformly quasiconformal. In fact, stronger than that.
Nov
21
revised $L^p$ stability of the Beltrami equation
Added an assumption and normalised the quasiconformal maps.
Nov
20
asked $L^p$ stability of the Beltrami equation