Manuals/calci/TRIDIAGONAL

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MATRIX("TRIDIAGONAL",order)


  • is the size of the Tridiagonal matrix.

Description

  • This function returns the matrix with the property of tridiagonal.
  • A square matrix with nonzero elements only on the diagonal and slots horizontally or vertically adjacent the diagonal.
  • i.e., along the subdiagonal and superdiagonal.
  • So a tridiagonal matrix is a matrix that has nonzero elements only on the main diagonal, the first diagonal below this, and the first diagonal above the main diagonal.
  • A tridiagonal is of the form:

 

  • A general tridiagonal matrix is not necessarily symmetric or Hermitian,but tridiagonal matrix is a matrix that is both upper and lower Hessenberg matrix.
  • In Calci, MATRIX("tridiagonal") gives the tridiagonal matirx of order 3.
  • Users can change the order of the matrix.