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Journal of mathematical sciences, the university of Tokyo 19, 3 (2012) 325-357
Birational self-maps and piecewise algebraic geometry
Stéphane Lamy 1, Julien Sebag 2
(2012)

Let X be a smooth projective complex variety, of dimension 3, whose Hodge numbers h^{3,0}(X), h^{1,0}(X) both vanish. Let f: X--> X be a birational map that induces an isomorphism on (dense) open subvarieties U,V of X. Then we show that the complex reduced varieties (X \ U), (X \ V) are piecewise isomorphic.
1:  Institut Mathématiques de Toulouse
Institut Mathématiques de Toulouse
2:  Institut de Recherche Mathématique de Rennes (IRMAR)
CNRS : UMR6625 – Université de Rennes 1 – École normale supérieure de Cachan - ENS Cachan – Institut National des Sciences Appliquées (INSA) : - RENNES – Université de Rennes II - Haute Bretagne
Géométrie algébrique
Mathematics/Algebraic Geometry
birational map – piecewise isomorphism
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