tridiagonal
Having nonzero elements only in the main diagonal and the diagonals directly above and below it.
Adjective
- Having nonzero elements only in the main diagonal and the diagonals directly above and below it.
- The following proposition shows a connection between negafibonacci numbers and the determinants of a family of tridiagonal matrices. - 2019 June 24, Juan Triana, “Negafibonacci Numbers via Matrices”, in Bulletin of...
Origin
From tri- + diagonal.