jalal albadry . jalal al badry . jalal alhaj abed .

General relativity vector analysis Gauss-Ostrogradsky theorem   Divergence theorem  Bianchi identity  Biot- Savart law  Christoffel symbols  Coordinate surface  Cosmical constant . Defect . Einstein’s law of gravitation  Elliptic geometry  Equivalence of mass . jalal alhaj abed .  Even horizon  Kronecker delta  .  jalal albadry . Machs principle  Mass – Energy equivalence Non- Euclidean space  Skew- symmetric Special principle of relativy Calculus of variations and Lagrangian MechanicsCelestial Ecliptic Coordinates Geocentric Coordinates Heliocentric Coordinates Horizon Coordinates boundary conditions Buckingham kinematics’ viscosity linearly independent prototype