Fay’s trisecant formula and cross-ratios

Poor, Cris

doi:10.1090/S0002-9939-1992-1062834-8

Fay’s trisecant formula and cross-ratios
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by Cris Poor PDF

Proc. Amer. Math. Soc. 114 (1992), 667-671 Request permission

Abstract:

This note considers Fay’s trisecant formula as a relation between cross-ratio functions and thereby gives a simple proof of the trisecant formula. In this proof the expression for the cross-ratio function is lifted from the theta locus to the entire Jacobian. Variations of the formula as used by different authors are also given.

References

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