Physics
Scientific paper
May 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012cqgra..29i7001l&link_type=abstract
Classical and Quantum Gravity, Volume 29, Issue 9, pp. 097001 (2012).
Physics
Scientific paper
We consider the use of Zorn's lemma in establishing the existence of
maximal extensions of spacetimes, and consider Krasnikov's theorem
(Krasnikov 2002 Class. Quantum Grav. 19 4109–29) on the
non-existence of time machines in the light of these considerations.
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