Submission date: 30 June 2006, revised version 24 August 2006 and 25 November 2007.

Abstract:

We collapse Poizat's green fields and obtain a bad field in characteristic 0. Article in English and German.

Mathematics Subject Classification: 03C45, 03C60, 03C15, 12L12

Keywords and phrases: bad field, finite Morley rank, amalgamation

Full text: German pdf, dvi, ps, English pdf, dvi, ps (First version : German pdf, dvi, ps, English pdf, dvi, ps; Second version : pdf, dvi, ps).