Geodesic
Another Possible Abnormality of Compact Space-Time
Canadian mathematical bulletin, Tome 18 (1975) no. 5, pp. 695-697

Voir la notice de l'article provenant de la source Cambridge University Press

It is shown that the Lorentz structure of a compact prespace- time M can be so chosen such that M can not satisfy the strong energy condition. Thus, combining both the causal and the strong energy conditions, a stronger case against the compact space-times as proper arenas of physics can be made. 
Lee, K. K. Another Possible Abnormality of Compact Space-Time. Canadian mathematical bulletin, Tome 18 (1975) no. 5, pp. 695-697. doi: 10.4153/CMB-1975-121-8
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[3] 3. Lee, K. K., General Relativity & Gravitation, 4 (1973) 421. Google Scholar

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