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Continuous symmetries of Lagrangians and exact solutions of discrete equations
JOURNAL OF MATHEMATICAL PHYSICS, no. 1 (2004): 336-359
摘要
One of the difficulties encountered when studying physical theories in discrete space-time is that of describing the underlying continuous symmetries (like Lorentz, or Galilei invariance). One of the ways of addressing this difficulty is to consider point transformations acting simultaneously on difference equations and lattices. In a pre...更多
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