Mondeuse noire 1937 and later developed a white-berried color mutation known as "Helena". Also in the late 20th and early 21st century, it was discovered that some of the plantings of Petite Sirah were actually field blends of true Petite Sirah (Durif) as well as several other varieties including Mondeuse noire. Though the exact relationship is not yet known, DNA analysis has also shown that Mondeuse noire has some relationship to the Savoie wine grape Douce noir which is known as "Charbono" in California and "Bonarda" in Argentina. While Mondeuse noire and Mondeuse blanche are not color mutations of one or the
Arithmetic of abelian varieties Arithmetic of abelian varieties In mathematics, the arithmetic of abelian varieties is the study of the number theory of an abelian variety, or family of those. It goes back to the studies of Pierre de Fermat on what are now recognized as elliptic curves; and has become a very substantial area both in terms of results and conjectures. Most of these can be posed for an abelian variety "A" over a number field "K"; or more generally (for global fields or more general finitely-generated rings or fields). There is some tension here between concepts: "integer point" belongs in a sense