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math-ph2020
Geometrical formulation for adjoint-symmetries of partial differential equations
Stephen C. Anco, Bao Wang
A geometrical formulation for adjoint-symmetries as 1-forms is studied for general partial differential equations (PDEs), which provides a dual counterpart of the geometrical meani…
math-ph2020★ 10 cited
A formula for symmetry recursion operators from non-variational symmetries of partial differential equations
Stephen C. Anco, Bao Wang
An explicit formula to find symmetry recursion operators for partial differential equations (PDEs) is obtained from new results connecting variational integrating factors and non-v…