Conformal field theory near a wedge

We discuss the constraints on the correlation function in a
conformal field theory in the vicinity of a wedge, where two boundaries
intersect. In this geometry, one can have three types of operators living
in the bulk, boundary or wedge. These operators are constrained by the
kinematical setup in this geometry.  We study how the Schwinger-Dyson
equation of motion can be used to compute the correlation function in this
theory.