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On the possibility of identical objects in general relativity. (English)
Math. Educ. 40, No. 3, 155-158 (2006).
Summary: Exploiting a condition which applies to the curvature tensor of every space-time with mirror symmetrical spatial sections, we show that general relativity forbids the existence of real or idealized identical objects interacting only through their gravitational fields.
Classification: M50 I90 H60 G90
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