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Jan 26, 2023 at 12:01 answer added chj timeline score: 2
Apr 20, 2019 at 22:35 review Close votes
Apr 21, 2019 at 0:36
Nov 4, 2012 at 13:15 answer added Gerald Edgar timeline score: 4
Nov 4, 2012 at 13:03 comment added Gerald Edgar Actually, the parallelogram law involves the affine structure as well as the metric, so we cannot do that directly. Maybe try this: there are two points in the hyperspace with non-unique midpoint.
Nov 3, 2012 at 21:10 vote accept Marcus
Nov 3, 2012 at 20:50 answer added Julien Melleray timeline score: 8
Nov 3, 2012 at 20:12 comment added Gerald Edgar Isometric, unlikely. Show that the hyperspace fails the parallelogram law.
Nov 3, 2012 at 19:16 history asked Marcus CC BY-SA 3.0