IsBidiagonal

Tests if a matrix is bidiagonal.

Syntax

• IsBidiagonal(A[, ε])

  • A is a matrix

  • ε is a positive number

Description

If A is a matrix then IsBidiagonal(A, ε) is true iff A is upper bidiagonal or lower bidiagonal (with epsilon ε).

Examples

❨❨1, 2, 0, 0❩, ❨0, 2, 3, 0❩, ❨0, 0, 1, 0❩, ❨0, 0, 0, 5❩❩

⎛1  2  0  0⎞
⎜0  2  3  0⎟
⎜0  0  1  0⎟
⎝0  0  0  5⎠

IsBidiagonal(ans)

true

See also

• IsUpperBidiagonal

• IsLowerBidiagonal

• IsDiagonal

• IsTridiagonal