THE pure geometer generalising Euclid’s system constructs self-consistent geometries of any number of dimensions.1 Which of these can be physical geometries, viz. can have application to physical space when ‘point’, ‘line’, ‘plane’, etc., have the senses described in Chapters 4 and 6?
KeywordsPhysical Space Material Object Euclidean Geometry Unique Identification Perpendicular Distance
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