Cho-Duan-Ge decomposition 1 Clairaut equation 1 Einstein field equation 1 Hamilton-Jacobi equation Hilbert space linearization 1 Kirchhoff's integral theorem 1 Klein-Gordon-Fock equation 1 Lie-Poisson action 1 Lie-Poisson structure 1 Maxwell's vacuum equations 1 Noether symmetry 1 Physics 1 Poisson manifold 1 Research & information: general 1 abstracting 1 algebra of symmetry operators 1 arithmetic 1 arity 1 asymptotic conditions 1 black holes 1 canonical gravity 1 coherent states 1 conformable differential 1 constraintless formalism 1 covariance 1 current Lie algebra representation 1 current algebra symmetry 1 detector clicks 1 diffeomorphism group 1 dirac reduction 1