Abstract
Discrete mechanics, which is motivated by modern digital computer capability, is a form of mechanics in which the basic concepts are defined in terms of differences and sums, while the basic dynamical equations are difference equations. The sophisticated limit concepts of the calculus are thereby replaced by the power to do arithmetic at high speeds. In this paper, it is shown that the physical laws of various forms of discrete mechanics are invariant with respect to the coordinate system used.
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Greenspan, D. Symmetry in discrete mechanics. Found Phys 3, 247–253 (1973). https://doi.org/10.1007/BF00708442
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DOI: https://doi.org/10.1007/BF00708442