Description Usage Arguments Value Examples
Backsolve with band 1 upper Cholesky.
1 | band1_backsolve(U, z)
|
U |
An upper triangular square matrix with non-zero entries only on the main diagonal and the first superdiagonal. |
z |
A vector with as many elements as the number of rows of U. |
A vector.
1 2 3 4 | Q <- ar1_prec_irregular(c(1, 3:4, 6), 0.5, 1)
U <- chol_tridiag_upper(Q)
z <- rnorm(nrow(U))
band1_backsolve(U, z)
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