Definition
Positive Semidefinite Symmetric Matrix
A symmetric matrix
is positive semidefinite if every vector satisfies Positive definiteness implies positive semidefiniteness, but not conversely: a non-zero
may satisfy .
Positive Semidefinite Symmetric Matrix
A symmetric matrix
is positive semidefinite if every vector satisfies Positive definiteness implies positive semidefiniteness, but not conversely: a non-zero
may satisfy .