Definition:Matrix/Upper Triangular Elements

Definition
Let $\mathbf A = \sqbrk a_{m n}$ be a matrix.

The elements $a_{i j}: i < j$ are called the upper triangular elements.

Also known as
Some sources refer to upper triangular entries.

Also see

 * Definition:Lower Triangular Element
 * Definition:Diagonal Element


 * Definition:Lower Triangular Matrix
 * Definition:Upper Triangular Matrix