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Jun 5, 2016 at 7:03 comment added bubba I heard this in a Monty Python sketch. But I don't suppose they were thinking about non-commutative geometries or quantum mechanics.
Apr 30, 2015 at 20:34 comment added isomorphismes I like it as a way to explain cohomology on a closed circuit graph, as an alternative to exactness ⇒ Green's theorem.
Aug 8, 2012 at 23:44 comment added Jon Paprocki interpretation in terms of noncommutative geometry can be found at physik.uni-regensburg.de/forschung/krey/papkre0
Aug 8, 2012 at 23:44 comment added Jon Paprocki It is not a perfect analogy, but I think that the intuition built from this statement helps to understand something like the Aharanov-Bohm effect in quantum mechanics. In this case, the quantum phase of a particle moving from point A to point B depends on the path taken to get there. So if we wave our hands and replace 'phase' with 'altitude', then we could imagine that there are two different paths from A to B, one which is 'uphill' and one which is 'downhill'. And so you might have a notion of walking uphill to school both ways. A quick introduction to the Aharanov-Bohm effect and its
Aug 5, 2012 at 21:52 comment added André Henriques Sorry. I really don't understand...
Jul 4, 2012 at 18:19 history answered Jon Paprocki CC BY-SA 3.0