  A derivation of entropy from the expressions for two dimensional gravitation
anomalies is given. Starting from the near horizon anomalous energy-momentum
tensors corresponding to particular anomalies, the Virasoro algebra with
central extension is obtained. The central charge is identified by comparing
with the standard form of the algebra. Then the conserved charge in the ground
state is computed. Finally, using the Cardy formula the entropy is obtained.
Here both the vector and chiral theories are discussed.
