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gr-qc2002
Relational Relativity
Amir H. Abbassi, Amir M. Abbassi
According to a simple model of inertia a Machianized theory of special and general relativity named as relational relativity is presented.
gr-qc2001
General Birkhoff's Theorem
Amir H. Abbassi
Space-time is spherically symmetric if it admits the group of SO(3) as a group of isometries,with the group orbits spacelike two-surfaces. These orbits are necessarily two-surface…
gr-qc1998
General Solutions of The Spherically Symmetric Vacuum Einstein Field Equations
Amir H. Abbassi
According to Birkhoff's theorem the only spherically symmetric solution of the vacuum Einstein field equations is the Schwarzschild solution. Inspite of imposing asymptotically fla…