GENERAL BPS BLACK-HOLES IN 5 DIMENSIONS

An algorithm for constructing general static black hole configuration for the theory of N = 2, d = 5 supergravity coupled to an arbitrary nu mber of Abelian vector multiplets is given. The underlying very specia l geometry structure plays a major role in this construction. From the viewpoint of M-theory compactified on a Calabi-Yau threefold, these b lack holes are identified with BPS winding states of the membrane arou nd two-cycles of the Calabi-Yau threefold, and thus are of importance in the probing of the phase transitions in the moduli space of M-theor y compactified on a Calabi-Yau threefold.