This article deals with the
problem of analyticity of Bergman isometries. One of the most important
properties of the Bergman metric of a bounded domain is that it is invariant
under the action of the group of biholomorphic maps. One then can ask if
all the isometries are indeed complex analytic up to an obvious complex
conjugation. There are several affermative answers to this question. In the present
work, we study the case of convex polyhedral domains in ℂ2 and we prove
that any Bergman isometry of such a domain is analytic up to a complex
conjugation.