. . "Hamilton\u2013Jacobi\u2013Bellman (HJB) partial differential equation" . . "a straightforward extension" . ":Hamilton\u2013Jacobi\u2013Bellman equation" . . . "Bellman's Dynamic Programming" . . "Hamilton\u2013Jacobi\u2013Bellman equation" . . . "Hamilton\u2013Jacobi\u2013Bellman equation" . . . . .