We calculate numerically the hydrodynamic evolution of a γ-ray burst fireball. The results show that refluence will emerge during fireball expansion due to neg
In this paper we obtain some properties of irreducible representations of general group algebras, then as applications, we extend Gluck-Wolf Theorem for ordinar
We give a necessary and sufficient condition for the nilpotent operators to be similiar to irreducible operators, and give an answer to D.A.Herrero Conjectures