A note on the discriminant

Details A note on the discriminant A note on the discriminant

2010-04-22

arxiv.org/abs/1004.3904v1

Mathematics

Algebraic Geometry

Scientific paper

Let $F(X,Y)=Y^d+a_1(X)Y^{d-1}+...+a_d(X)$ be a polynomial in $n+1$ variables
$(X,Y)=(X_1,...,X_n,Y)$ with coefficients in an algebraically closed field K.
Assuming that the discriminant $D(X)=\disc_Y F(X,Y)$ is nonzero we investigate
the order $\ord_P D$ for $P\in K^n$. As application we get a discriminant
criterion for the hypersurface F=0 to be nonsingular.

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