Immersione canonica e mappa dei periodi. Il caso dei gruppi di Barsotti-Tate étale e moltiplicativi
Invariant differentials and -functions. Reciprocity law for quadratic fields and elliptic curves over
Invariants, torsion indices and oriented cohomology of complete flags
Let be a split semisimple linear algebraic group over a field and let be a split maximal torus of . Let be an oriented cohomology (algebraic cobordism, connective -theory, Chow groups, Grothendieck’s , etc.) with formal group law . We construct a ring from and the characters of , that we call a formal group ring, and we define a characteristic ring morphism from this formal group ring to where is the variety of Borel subgroups of . Our main result says that when the torsion index...