Invariants dans le complété de la clôture algébrique d'un corps local
Let be a field of degree over , the field of rational -adic numbers, say with residue degree , ramification index and differential exponent . Let be the ring of integers of and its unique prime ideal. The trace and norm maps for are denoted and , respectively. Fix , a power of a prime , and let be a numerical character defined modulo and of order . The character extends to the ring of -adic integers in the natural way; namely , where denotes the residue class...
We illustrate how a particular expression, involving the generalized Bernoulli polynomials, satisfies systems of congruence relations if and only if a similar expression, involving the generalized Bernoulli numbers, satisfies the same congruence relations. These congruence relations include the Kummer congruences, and recent extensions of the Kummer congruences provided by Gunaratne.
La conjecture de Birch et Swinnerton-Dyer prédit que l’ordre du zéro en de la fonction d’une courbe elliptique définie sur est égal au rang du groupe de ses points rationnels. On sait démontrer cette conjecture si ou , mais on n’a aucun résultat reliant et si . Nous expliquerons comment Kato démontre que la fonction -adique attachée à a, en , un...