3 papers
math.AT2001
Constructive Algebraic Topology
Julio Rubio, Francis Sergeraert
The classical ``computation'' methods in Algebraic Topology most often work by means of highly infinite objects and in fact +are_not+ constructive. Typical examples are shown to de…
math.AG1998
Ordinary Subvarieties of codimension one
Ferruccio Orecchia
In this paper we extend the properties of ordinary points of curves [10] to ordinary closed points of one-dimensional affine reduced schemes and then to ordinary subvarieties of co…
math.AG1998
Points in generic position and conductor of varieties with ordinary multiple subvarieties of codimension one
Ferruccio Orecchia
We extend results of our previous papers, on ordinary multiple points of curves, and on the computation of their conductor, to ordinary multiple subvarieties of codimension one.