Main procedures:
D.4.13.1 normal normalization of an affine ring D.4.13.2 normalP normalization of an affine ring in positive characteristic D.4.13.3 normalC normalization of an affine ring through a chain of rings D.4.13.4 HomJJ presentation of End_R(J) as affine ring, J an ideal D.4.13.5 genus computes the geometric genus of a projective curve D.4.13.6 primeClosure integral closure of R/p, p a prime ideal D.4.13.7 closureFrac write a polynomial in integral closure as element of Quot(R/p) D.4.13.8 iMult intersection multiplicity of the ideals of the list L
D.4.13.9 deltaLoc sum of delta invariants at conjugated singular points D.4.13.10 locAtZero checks whether the zero set of I is located at 0 D.4.13.11 norTest checks the output of normal, normalP, normalC