Bulletin of the
Korean Mathematical Society
BKMS

ISSN(Print) 1015-8634 ISSN(Online) 2234-3016

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Bull. Korean Math. Soc. 2017; 54(5): 1773-1778

Online first article July 20, 2017      Printed September 30, 2017

https://doi.org/10.4134/BKMS.b160756

Copyright © The Korean Mathematical Society.

Singularities of divisors on flag varieties via Hwang's product theorem

Evgeny Smirnov

Independent University of Moscow

Abstract

We give an alternative proof of a recent result by B.~Pasquier stating that for a generalized flag variety $X=G/P$ and an effective $\QQ$-divisor $D$ stable with respect to a Borel subgroup the pair~\mbox{$(X,D)$} is Kawamata log terminal if and only if~\mbox{$\lfloor D\rfloor=0$}.

Keywords: klt pair, flag variety, log canonical threshold

MSC numbers: Primary 14E30; Secondary 14M15

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