Institute for Problems in Mechanics, Russian
Academy of Sciences
101-1 ,Vernadskii Ave., Moscow, 119526, Russia
Web site: http://rsfq1.physics.sunysb.edu/~rylov/yrylov.htm
or mirror Web site: http://gasdyn-ipm.ipmnet.ru/~rylov/yrylov.htm
Updated November, 23, 2012
It shown that the space-time geometry is multivariant, and one cannot describe it completely, using formalism of the linear space. Tachyons and tachyon gas cannot be described in terms of the linear space formalism. To describe correctly the space-time geometry, one needs to use the metric approach and description in terms of the world function. In the framework of metric approach to geometry one can explain freely the dark matter nature.