The golden age of the Italian school ofudalgebraic geometry began with AntonioudLuigi Gaudenzio Giuseppe Cremona andudincluded among its main contributorsudEnrico Castelnuovo, Federigo Enriques,udand Francesco Severi. The Italian school spannedudnearly a century, from the unification of Italy inud1861 to Enriques’s posthumously published post-udWorld War II monograph on algebraic surfacesud[Enrq 49]. In the 1890s Enriques, a mathematicianudwho once quipped that “intuition is the aristocraticudway of discovery, rigour the plebian way” [Hodgeud48], and his colleague and future brother-in-lawudCastelnuovo began their monumental work on theudbirational theory of algebraic surfaces over theudcomplex numbers C. Severi joined them in thisudeffort a few years later.
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