01164nam a2200301 i 450099100088356970753620020507175203.0941005s1964 us ||| | eng b10770689-39ule_instLE01303786ExLDip.to MatematicaengAMS 11-01AMS 11-XXAMS 11A05Fraenkel, Abraham Adolf534488Extension of the number-concept :groups and fields. Rational, real, complex, hypercomplex numbers /Abraham A. FraenkelNew York :Scripta Mathematica,196488 p. ;26 cm.The scripta mathematica studies ;10Problems and methods in modern mathematics. A series of monographs ;2Algebraic systemsMultiplicative structure.b1077068923-02-1728-06-02991000883569707536LE013 11-XX FRA11 (1964)12013000010625le013-E0.00-l- 02020.i1086910428-06-02Extension of the number-concept922529UNISALENTOle01301-01-94ma -engus 01