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Hamilton-Jacobi Equations

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Hamilton − Jacobi Equations The main problem to be discussed in this paper is to solve the following:  ut + H(Dx u, x) = 0 in Rn × (0, ∞) (1) n u=g on R × {t = 0}. (2) This is known as the Hamilton-Jacobi equation; physically it represents an elegant and mathematically sophisticated reformulation of Newtonian me- chanics (1687), and is equivalent to Lagrangian mechanics (1788) and Hamil- tonian mechanics (1833), which are other reformulations of Newtonian me- chanics that trade…

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