We investigate two algebra of curves on a topological surface with punctures
- the cluster algebra of surfaces defined by Fomin, Shapiro, and Thurston, and
the generalized skein algebra constructed by Roger and Yang. By establishing
their compatibility, we resolve Roger-Yang’s conjecture on the deformation
quantization of the decorated Teichmuller space. We also obtain several
structural results on the cluster algebra of surfaces. The cluster algebra of a
positive genus surface is not finitely generated, and it differs from its upper
cluster algebra.