. . "\\(H = \\sum p_i\\dot{q_i} - L\\), where \\(p_i\\) is a generalized momentum, \\(\\dot{q_i}\\) is a generalized velocity, and \\(L\\) is the Lagrange function."^^ . . "Hamilton Function"@en . "http://en.wikipedia.org/wiki/Hamilton\u2013Jacobi_equation"^^ . "http://www.iso.org/iso/catalogue_detail?csnumber=31889"^^ . . "H" . "The Hamilton\u2013Jacobi equation (HJE) is a necessary condition describing extremal geometry in generalizations of problems from the calculus of variations." .