ABSTRACT
Where we see once more that it is not so much the notion of energy and its invariance that matters but the existence of something akin to a potential and some basic mathematical properties discovered a long time ago by Cauchy and Riemann.
Where we see once more that it is not so much the notion of energy and its invariance that matters but the existence of something akin to a potential and some basic mathematical properties discovered a long time ago by Cauchy and Riemann.