‎PEANO, GIUSEPPE.‎
‎Studii di logica matematica. (Studies in Mathematical Logic).‎

‎Torino, Carlo Clausen, 1897. In: Atti della R. Accademia delle Scienze di Torino, Vol. XXXII, Disp. 11a, 1896-97, pp. 565-83. Royal8vo. Original printed wrappers. Some small tears. Wrappers loosening. Paper label pasted to front wrapper. Internally fine and clean. Uncut and unopened.‎

Reference : 33644

‎First edition.'In this work he is concerned with reducing the number of undefined terms to a minimum ... It was in this article that he introduced the symbol (left-facing E) for existence ... This paper also contains remarks on Frege's mathematical logic ...' (Kennedy, Life and works of Giuseppe Peano, p.68-69.) Frege and Peano worked independently on many of the same subjects in mathematical logic using each their own symbolism. Frege used a cumbrous two-dimensional system. It was Peano's notation which survived and was used in the 'Principia Mathematica'.Kennedy, No. 91.‎