55 citations · 63 across the 3 of their papers we have counts for
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hep-th1993
Equations with infinitely many Lagrangians
D. B. Fairlie
Necessary conditions for a field theoretic equation of motion to be the consequence of variation of an infinite number of inequivalent Lagrangians are examined.
hep-th1993
The Integrable Mapping as the Discrete Group of Inner Symmetry of Integrable Systems
D. B. Fairlie, A. N. Leznov
It is shown that each integrable mapping is connected with a hierarchical completely integrable sytem of equations of evolution type which are invariant with respect to the transfo…
hep-th1993
Equations of Hydrodynamic Type
D. B. Fairlie
The universal field equations introduced by the author and his collaborators, which admit infinitely many inequivalent Lagrangian formulations are shown to arise as consistency con…