On the Thomae formula for $Z_N$ curves
Abstract
We shall give an elementary and rigorous proof of the Thomae formula for ${\bf Z}_N$ curves which was discovered by Bershadsky and Radul. Instead of using the determinant of the Laplacian we use the traditional variational method which goes back to Riemann, Thomae, Fuchs. In the proof we made explicit the algebraic expression of the chiral Szegö kernels and proves the vanishing of zero values of derivatives of theta functions with ${\bf Z}_N$ invariant $1/2N$ characteristics.
- Publication:
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arXiv e-prints
- Pub Date:
- August 1996
- DOI:
- 10.48550/arXiv.alg-geom/9608016
- arXiv:
- arXiv:alg-geom/9608016
- Bibcode:
- 1996alg.geom..8016N
- Keywords:
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- Mathematics - Algebraic Geometry
- E-Print:
- Latex file, the constant in Thomae formula is corrected