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Mar 27, 2015 at 2:44 answer added tom timeline score: 5
Mar 27, 2015 at 2:38 comment added tom Actually, I don't think such general solutions could exist in this case, as every solution satisfies $S[\gamma_{ext}] = S(t_1,y_1)-S(t_0,y_0)$. This is a little surprising, but I know so little of the theory of FOPDEs I really have no right to be surprised here :)
Mar 27, 2015 at 2:04 comment added tom @Qmechanic Thankyou once again! You've been very helpful, and I now feel my initial suspicions were completely vindicated: the converse is true, and solutions of the H-J equation do correspond to the minimal action from some particular point in phase space (or at least elements of the complete solution - there may be general solutions derived from envelopes of the complete solution which behave otherwise.) I'll explain my error (as usual, very silly) in an answer below. :)
Mar 26, 2015 at 14:12 comment added Qmechanic Related: physics.stackexchange.com/q/32268/2451 and links therein.
Mar 26, 2015 at 13:59 history asked tom CC BY-SA 3.0