Is the trace of the product of two positive semidefinite matrices always nonnegative?
12868
Is the product of symmetric positive semidefinite matrices positive definite?
116376
Prove the determinant is the product of its diagonal entries
146316
what is no. of positive eigen value of symmetric matrix A with some given relationship
125899
Prove$ L^2$ inner product satisfies positivity
101631
Determinant of a finite-dimensional matrix in terms of trace
88820
Three linked question on non-negative definite matrices.
39585
Connection between rank and matrix product
87636
A Product function for matrix products
34697
Why is the Fisher Information matrix positive semidefinite?
22424
Has this "generalized semidirect product" been studied?
29454
A and B are real, symmetric and positive semi-definite matrices of the same order; is AB diagonalizable?
142307
Counting invertible $0$-$1$ matrices that remain invertible under negating the diagonal
85550
Positive definiteness of difference of inverse matrices
116309
Is this matrix positive semi-definite?
22222
Properties of zero-diagonal symmetric matrices
35801
Traceless matrices and commutators
158343
how to prove an element is non-zero in a tensor-product