We present a detailed construction of parametrices for fully elliptic uniformly
degenerate differential or pseudodifferential operators on manifolds
with boundary. Following the original work by Mazzeo and Melrose on
the 0-calculus, the parametrices are shown to have (polyhomogeneous)
conormal Schwartz kernels on the 0-double space, which is a resolution of
. The
extended 0-double space introduced by Lauter plays a useful role in the construction.
