Dr. Mira Sen (Banerjee)

Dr Sun Yat-sen (1866-1925): medical doctor and China's founding president.

Ashoke Sen

We analyze M-theory compactified on (K3 × S)/Z2 where the Z2 changes the sign of the three form gauge field, acts on S as a parity transformation and on K3 as an involution with eight fixed points preserving SU(2) holonomy. At a generic point in the moduli space the resulting theory has as its low energy limit N = 1 supergravity theory in six dimensions with eight vector, nine tensor and twenty...

Wonderful Mira.

Since being named 'wonderful' in the seventeenth century for its peculiar brightness variability, Mira A has been the subject of extensive research and become the prototype for a whole class of 'Mira' variable stars. The primary star in a binary system, Mira A is reaching the end of its life and currently undergoing an extended period of enhanced mass loss. Recent observations have revealed a s...

On the absence of scalar hair for charged rotating black holes in non-minimally coupled theories S SEN and N BANERJEE

Recently there has been a considerable resurgence in the no scalar hair theorem for black holes. Investigations regarding no hair theorem, however, had started about thirty years ago [1]. Inspired by Israel’s uniqueness theorem for Schwarzschild and Reissner–Nordstrom black holes [2] and Carter [3] and Wald’s [4] uniqueness theorem for Kerr black holes, Wheeler anticipated that gravitational co...

Sen - R 9708 1997

We study equational axiomatizations of bisimulation equivalence for the language obtained by extending Milner's basic CCS with string iteration. String iteration is a variation on the original binary version of the Kleene star operation p q obtained by restricting the rst argument to be a non-empty sequence of atomic actions. We show that, for every positive integer k, bisimulation equivalence ...