special matrices

Complete

Summary

Diagonal matrices

  • stretch matrix
  • only the diagonal entries are filled, (i,j) where i=j

Scalar matrices

  • only the diagonal entries are filled, with the same value

Identity matrix

  • only the diagonal entries are 1

Triangle matrices

  • Eetries are filled in a triangle shape

Upper triangle matrices

  • only entries on and above the diagonal are filled

Strictly upper triangular matrices

  • only entries above the diagonal are filled

Lower triangular matrices

  • only entries on and below the diagonal are filled

Strictly lower triangular matrices

  • only entries below the diagonal are filled