<< In regard to the question of how Russell found out about Bettazzi, I
suggest looking for references to Bettazzi in Peano's work. Russell
met Peano at the 1900 congresses of mathematics and philosophy, and
started seriously reading Peano immediately after the congresses.
Presumably Bettazzi's work was better known in Italy than in
Germany and he may be cited by Peano or even appear in the
Formulario. >>
Translated & edited by Hubert C. Kennedy
Univ of Toronto Press (1973)
"For several years a society has been publishing the `Formulaire de
mathematiques', whose `Introduction' appeared in 1894. The first edition,
begun in 1892, was completed in 1895. This publication is meant to contain,
expressed in the symbols of logic, the theorems, definitions, and proofs of
various mathematical theories. Collaborating in this work are Messrs Vailati,
Castellano, Burali-Forti, Giudice, Vivanti, Betazzi, Fano, and others who
send in additions and corrections."
Peano, G., "Studii di logica matematica", Atti Accad. sci. Torino, 32
(1896-7), 565-83
I assume Betazzi is an alternative spelling of Bettazzi.
If so, Peano was certainly aware of some of Bettazzi's work.
Pat
Pat Touhey
Dept. of Math & Comp. Sci.
College Misericordia
Dallas, PA 18612