Mendelson, Elliott On non-standard models for number theory. (English) Zbl 0148.25501 Essays Found. Math., dedicat. to A. A. Fraenkel on his 70th Anniv., 259-268 (1962). Reviewer: B. van Rootselaar Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 03C20 Ultraproducts and related constructions 11U07 Ultraproducts (number-theoretic aspects) 12L10 Ultraproducts and field theory Keywords:Peano rings; ultraproducts; algebraic properties Citations:Zbl 0128.24103 PDFBibTeX XML