Geodesic
Blow Up Sequences and the Module of nth Order Differentials
Canadian journal of mathematics, Tome 28 (1976) no. 6, pp. 1289-1301

Voir la notice de l'article provenant de la source Cambridge University Press

Let C denote an irreducible, algebraic curve defined over an algebraically closed field k. Let ? be a singular point of C. We shall employ the following notation throughout the rest of this paper: R will denote the local ring at P, K the quotient field of the integral closure of R in K, A the completion of R with respect to its radical topology, and Ā the integral closure of A in its total quotient ring. 
Brown, William C. Blow Up Sequences and the Module of nth Order Differentials. Canadian journal of mathematics, Tome 28 (1976) no. 6, pp. 1289-1301. doi: 10.4153/CJM-1976-128-9
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