On the Differential Forms of the First Kind on Algebraic Varieties II.
Shoji Koizumi · Journal of the Mathematical Society of Japan · 1951
We shall give some supplementary remarks to my previous paper on the same subject1).As in Weil's definition, we shall call differential forms to be of the first kind on a Variety $U$ , when they are finite at every simple Point on every Variety birationally equivalent to $U$ .This definition is equivalent to my previous one in $[K]$ , if $U$ has a birationally equivalent model which is a complete Variety without singularities.