22 Oct
2020
22 Oct
'20
11:57 a.m.
You are of course absolutely right. Sorry about that. I glommed on to the 12 rotations of the set I defined and forgot that we were discussing only the minimal solutions. —Dan Tom Karzes wrote: ----- No, it is independent of the point set. As long as there are at least two distinct points, there are exactly four minimal solutions. Look at the subject of the sentence you quoted: The minimal solution is unique up to multiplication by a unit (1, i, -1, -i). ... ... -----