man-roxygen/deriv_wv/2nd/deriv2_rw.R

In SMAC-Group/simts: Time Series Analysis Tools

#' @section Process Haar WV Second Derivative:
#' Taking the derivative with respect to \eqn{\gamma^2}{gamma^2} yields:
#' \deqn{\frac{{{\partial ^2}}}{{\partial {\gamma ^4}}}\nu _j^2\left( \gamma ^2  \right) = 0 }{d^2/dgamma^4 nu[j]^2(gamma^2) = 0}