Durif The vine is a popular planting in Lake, Mendocino, Sonoma, Napa, Monterey and San Joaquin County. In addition to being produced as a varietal wine, the grape is sometimes blended with Zinfandel. In years when heavy rain or excess sun has weakened the quality or yield of Cabernet Sauvignon or Pinot noir plantings, Petite Sirah may also be used as a blending partner to strengthen the wine. The average age of Petite Sirah vines tends to be older than that of most Californian vines. As of December 2007, the TTB lists both Petite Sirah and Durif in 27 CFR §
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