Title
Discriminants of complete intersection space curves.
Abstract
n this paper, we develop a new approach to the discriminant of a complete intersection curve in the 3-dimensional projective space. By relying on the resultant theory, we prove a new formula that allows us to define this discriminant without ambiguity and over any commutative ring, in particular in any characteristic. This formula also provides a new method for evaluating and computing this discriminant more efficiently, without the need to introduce new variables as with the well-known Cayley trick. Then, we derive new properties and we show that this new definition of the discriminant satisfies to the expected geometric property and hence yields an effective smoothness criterion for complete intersection space curves.
Year
DOI
Venue
2017
10.1145/3087604.3087635
ISSAC
Keywords
DocType
Volume
Discriminants, algebraic space curves, homogeneous polynomials
Conference
abs/1702.01694
Citations 
PageRank 
References 
1
0.43
4
Authors
2
Name
Order
Citations
PageRank
Laurent Busé113114.74
Ibrahim Nonkané210.43