upper triangular matrix general ring
Generalized positive upper triangular matrix
strictly upper triangular matrix
strictly upper triangular matrix algebra
Upper triangular matrix
upper triangular matrix algebra
upper triangular matrix algebras
Formal triangular matrix ring
graded triangular matrix ring
2×2 Upper Triangular Operator Matrixes
linear space of upper triangular matrices
quasi-upper triangular matrices
strictly upper triangular matrices Lie algebra
transverse upper triangular
upper ring suspension device
upper triangular differential system
upper triangular matrices