5 May
2020
5 May
'20
12:34 p.m.
On Tuesday, May 5, 2020, 09:58:03 AM PDT, Dan Asimov <dasimov@earthlink.net> wrote: A positive definite matrix always means a *symmetric* matrix, —Dan Not true. The nonsymmetric matrix [[a,b],[-b,c]] is positive definite when a > 0 and c > 0. -- Gene