While reading this derivation of relation of Schrödinger equation to Feynman path integral, I noticed that qi can differ form qi+1 very much, and when the limit of N→∞ is taken, there remain lots of paths, which are discontinuous (almost) everywhere — i.e. paths consisting of disconnected points.
Do I understand this wrongly? How do such discontinuous paths disappear on taking the limit? Or maybe they have zero contribution to integral?
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