Abstract
Using the analytic realization of middle convolution due to Dettweiler and Reiter, we show that any rigid Fuchsian system can be obtained as a subsystem of some generating system which has an integral representation of solutions of Selberg type. Twisted homology groups and twisted cohomology groups associated with such integrals are studied. In particular, contiguity relations and twisted cycles which realize local exponents are obtained.
Similar content being viewed by others
References
Aomoto K.: On structure of integrals of power product of linear functions. Sci. Pap. Coll. Gen. Edu. Univ. Tokyo 27, 49–61 (1977)
Dettweiler M., Reiter S.: An algorithm of Katz and its application to the inverse Galois problem. J. Symb. Comput. 30, 761–798 (2000)
Dettweiler M., Reiter S.: Middle convolution of Fuchsian systems and the construction of rigid differential systems. J. Algebra 318, 1–24 (2007)
Esnault H., Schechtman V., Viehweg E.: Cohomology of local systems on the complement of hyperplanes. Invent. Math. 109, 557–561 (1992)
Gauss, C.F.: Disquisitiones generales circa seriem infinitam \({1+\frac{\alpha\beta}{1.\gamma}x+\frac{\alpha(\alpha+1)\beta(\beta+1)}{1.2.\gamma(\gamma+1)}xx+\frac{\alpha(\alpha+1)(\alpha+2)\beta(\beta+1)(\beta+2)}{1.2.3.\gamma(\gamma+1)(\gamma+2)}x^3+{\rm etc}.}\) pars prior. In: Carl Friedrich Gauss–Werke Band III, pp. 123–162. Georg Olms, Hildesheim (1981)
Haraoka Y.: Integral representations of solutions of differential equations free from accessory parameters. Adv. Math. 169, 187–240 (2002)
Haraoka, Y., Mimachi, K.: A connection problem for Simpson’s even family of rank four. Funkcial. Ekvac. (to appear)
Haraoka Y., Yokoyama T.: Construction of rigid local systems and integral representations of their sections. Math. Nachr. 279, 255–271 (2006)
Kaneko J.: The Gauss-Manin connection of the integral of the deformed difference product. Duke Math. J. 92, 355–379 (1998)
Katz N.M.: Rigid Local Systems. Princeton University Press, Princeton (1996)
Kohno T.: Homology of a local system on the complement of hyperplanes. Proc. Jpn. Acad. Ser. A 62, 144–147 (1986)
Oshima, T.: Katz’ middle convolution and Yokoyama’s extending operation. arXiv:0812.1135 [math.CA]
Schechtman V., Terao H., Varchenko A.: Local systems over complements of hyperplanes and the Kac-Kazhdan conditions for singular vectors. J. Pure Appl. Algebra 100, 93–102 (1995)
Yokoyama T.: Construction of systems of differential equations of Okubo normal form with rigid monodromy. Math. Nachr. 279, 327–348 (2006)
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the JSPS Grants-in-Aid for scientific research B, Nos. 17340049 and 21340038.
Rights and permissions
About this article
Cite this article
Haraoka, Y., Hamaguchi, S. Topological theory for Selberg type integral associated with rigid Fuchsian systems. Math. Ann. 353, 1239–1271 (2012). https://doi.org/10.1007/s00208-011-0717-5
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00208-011-0717-5