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ON THE INTERSECTION OF RATIONAL TRANSVERSAL SUBTORI

Published online by Cambridge University Press:  01 April 2009

SHAHEEN NAZIR*
Affiliation:
Abdus Salam School of Mathematical Sciences, Government College University, Lahore, Pakistan (email: [email protected])
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Abstract

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We show that under a suitable transversality condition, the intersection of two rational subtori in an algebraic torus (ℂ*)n is a finite group which can be determined using the torsion part of some associated lattice. We also give applications to the study of characteristic varieties of smooth complex algebraic varieties. As an example we discuss A. Suciu’s line arrangement, the so-called deleted B3-arrangement.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2009

References

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