González Pérez, Pedro Daniel and Teissier, Bernard Toric geometry and the Semple-Nash modification. (Unpublished)
This paper proposes some material towards a theory of general toric varieties without the assumption of normality. Their combinatorial description involves a fan to which is attached a set of semigroups subjected to gluing-up conditions. In particular it contains a combinatorial construction of the blowing up of a sheaf of monomial ideals on a toric variety. In the second part it is shown that over an algebraically closed base field of zero characteristic the Semple-Nash modification of a general toric variety is isomorphic to the blowing up of the sheaf of logarithmic jacobian ideals and that in any characteristic this blowing-up is an isomorphism if and only if the toric variety is non singular.
|Uncontrolled Keywords:||Toric geometry, Semple-Nash modification, Logarithmic jacobian ideal|
|Subjects:||Sciences > Mathematics > Algebraic geometry|
|Deposited On:||20 May 2011 13:37|
|Last Modified:||20 May 2011 13:37|
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