toroidalization of locally toroidal morphisms of 3-folds

نویسندگان

r. ahmadian

school of mathematics, institute for research in fundamental sciences (ipm), p.o. box 19395-5746, tehran, iran.

چکیده

a toroidalization of a dominant morphism $varphi: xto y$ of algebraic varieties over a field of characteristic zero is a toroidal lifting of $varphi$ obtained by performing sequences of blow ups of nonsingular subvarieties above $x$ and $y$. we give a proof of toroidalization of locally toroidal morphisms of 3-folds.

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Toroidalization of locally toroidal morphisms of 3-folds

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عنوان ژورنال:
bulletin of the iranian mathematical society

جلد ۴۲، شماره ۲، صفحات ۳۷۱-۴۰۵

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