Colloquium Mathematicum

---

Il prof. Dorian Goldfeld, Columbia University,

terrà una conferenza dal titolo:

On Gauss' class number problem

il giorno 10 Novembre 2005 alle ore 17.00
presso il Dipartimento di Matematica dell'Università di Genova
via Dodecaneso, 35.

Abstract. Gauss conjectured that his tables of class numbers published in the Disquisitiones Arithmeticae in 1801 were complete and that there should be an effective algorithm to determine all imaginary quadratic fields with a given class number. While visiting Pisa, 1974-1975, I showed that Gauss' conjecture could be reduced to a special case of the Birch-Swinnerton-Dyer conjecture on elliptic curves. This conjecture was solved by Gross-Zagier in 1984 and then the three of us won the Cole Prize in number theory shortly after that for the solution of Gauss' conjecture on class numbers.

This talk will outline the history of the problem and some ideas of the solution.

---

Per ulteriori informazioni rivolgersi a: Segreteria Scientifica DIMA, tel. 010-353 6965
e-mail: colloquium at dima.unige.it

Organizzato da: L.Robbiano, D.Arezzo, C.Bartocci, M.Cavaliere, A.Conca, L.Pusillo.