2006/12/03 by Gavriel Segre, Segre, Gavriel
Mathematics · Physics and Astronomy · #FOS: Mathematics #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Logic (math.LO) #gr-qc #math.LO
paper · pdf · doi:10.48550/arxiv.gr-qc/0612021
arxiv created 2006/12/05 · arxiv updated 2009/12/01
Introducing his Chronology Protection Conjecture Stephen Hawking said that it seems that there exists a Chronology Protection Agency making the Universe safe for historians. Without taking sides about such a conjecture we show that the Chronology Protection Agency is not necessary in order to make the Universe unsafe for historians but safe for logicians.