Name : Humitaka SATO Institute : Department of Physics, Kyoto University E-mail : sato@tap.scphys.kyoto-u.ac.jp TITLE : Violation of Lorentz invarinace and Absolute frame of the Expanding Universe ABSTRACT : GZK-cutoff is based on the principle of relativity, that claims the non-existing of any physically prefereble inertia frame in the universe. On contray to this principle since Galileo, some prefereble inertia frame in the expanding universe can be identified, such Absolute frame as CMB- and H-isotropic frame and rest frame of matter or astronomical objects. One of the challenge of EHE cosmic-rays experiment is to seek a footprint on physics law of this Absolute frame.