Main procedures:
D.4.13.1 normal computes the normalization of basering/I, resp. computes the normalization of basering/I and the delta invariant D.4.13.2 HomJJ presentation of End_R(J) as affine ring, L a list D.4.13.3 genus computes genus of the projective curve defined by I D.4.13.4 primeClosure integral closure of R/p (p prime), L a list D.4.13.5 closureFrac write poly in integral closure as element of Quot(R/p)
D.4.13.6 deltaLoc (sum of) delta invariant(s) at conjugated singular points