In linear algebra, Cholesky decomposition or Cholesky factorization is a decomposition of a positive-definite symmetric matrix into the product of a lower triangular matrix and its conjugate transpose, The Cholesky Decomposition iPad app enables the entry of 2x2, 3x3 and 4x4 matrices, checks for the existence of a positive-definite symmetric matrix and performs the Cholesky Decomposition.