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Integers in the open string

T. Gannon

hep-tharXiv:hep-th/9910148

Abstract

We show that the Yabc of Pradisi-Sagnotti-Stanev are indeed integers, and we prove a conjecture of Borisov-Halpern-Schweigert. We indicate some of the special features which arise when the order of the modular matrix T is odd. Our arguments are general, applying to arbitrary ``parent'' RCFT assuming only that T has odd order.

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