Lower triangular matrices
42467
Inverse of an invertible triangular matrix (either upper or lower) is triangular of the same kind
12394
Overlapping positive definite block matrices
47589
Product of a primitive matrix and its transpose.
35801
Traceless matrices and commutators
117957
Linear algebra Upper Triangular matrix
63314
Triangular Factorials
105908
Triangle Inequality for SPD Matrix Norm
75215
Properties of invertible matrices
73155
Prove that for any square matrix, an invertible matrix B exists, so that BA is triangular
151240
Short way for upper triangularization
57515
Similar matrices and field extensions
23520
A property of Littlewood-Paley decomposition
87451
Construction of matrices under ZFC axioms
35247
The characteristic and minimal polynomial of a companion matrix
72156
Triangular grid fill
12955
Classification of $n\times n$ real matrices up to congruence
145045
Is it possible to give the closed-form of the stiffness matrix of triangular prism element?