Number Theory
Special values of fractional hypergeometric functions for function fields
[Valeurs spéciales des fonctions hypergéométriques fractionnaires pour les corps de fonctions]
Comptes Rendus. Mathématique, Tome 350 (2012) no. 17-18, pp. 801-806.

Dans ce travail nous étudions les fonctions hypergéométriques fractionnaires pour les corps de fonctions, introduites par D.S. Thakur. Nous caractérisons celles de ces fonctions qui sont algébriques, et nous démontrons la transcendance de valeurs spéciales en certains arguments algébriques non nuls de celles qui sont des fonctions transcendantes entières.

In this work we study the fractional hypergeometric functions for function fields, introduced by D.S. Thakur. We shall characterize algebraic functions among them, and show the transcendence of special values at some nonzero algebraic arguments, in the case when they are entire transcendental functions.

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DOI : 10.1016/j.crma.2012.10.002
Yao, Jia-Yan 1

1 Department of Mathematics, Tsinghua University, Beijing 100084, PR China
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Yao, Jia-Yan. Special values of fractional hypergeometric functions for function fields. Comptes Rendus. Mathématique, Tome 350 (2012) no. 17-18, pp. 801-806. doi : 10.1016/j.crma.2012.10.002. http://www.numdam.org/articles/10.1016/j.crma.2012.10.002/

[1] André, Y. Period Mappings and Differential Equations. From C to Cp, Tôhoku–Hokkaidô Lectures in Arithmetic Geometry, MSJ Mem., vol. 12, Mathematical Society of Japan, 2003

[2] Beukers, F.; Heckman, G. Monodromy for the hypergeometric function Fn1n, Invent. Math., Volume 95 (1989), pp. 325-354

[3] Dwork, B. p-adic cycles, Publ. Math. Inst. Hautes Études Sci., Volume 37 (1969), pp. 27-115

[4] Katz, N.M. Travaux de Dwork, Séminaire Bourbaki, 24ème année (1971/1972), Exp. No. 409, Lecture Notes in Math., vol. 317, Springer, Berlin, 1973, pp. 167-200

[5] Kochubei, A.N. Evolution equations and functions of hypergeometric type over fields of positive characteristic, Bull. Belg. Math. Soc. Simon Stévin, Volume 14 (2007), pp. 947-959

[6] Kochubei, A.N. Hypergeometric functions and Carlitz differential equations over function fields, Arithmetic and Geometry Around Hypergeometric Functions, Progr. Math., vol. 260, Birkhäuser, 2007, pp. 163-187

[7] Kochubei, A.N. Analysis in Positive Characteristic, Cambridge Tracts in Math., vol. 178, Cambridge University Press, 2009

[8] Thakur, D.S. Hypergeometric functions for function fields, Finite Fields Appl., Volume 1 (1995), pp. 219-231

[9] Thakur, D.S. Hypergeometric functions for function fields II, J. Ramanujan Math. Soc., Volume 15 (2000), pp. 43-52

[10] Thakur, D.S. Function Field Arithmetic, World Scientific Publishing Co., Inc., 2004

[11] Thakur, D.S.; Wen, Z.-Y.; Yao, J.-Y.; Zhao, L. Hypergeometric functions for function fields and transcendence, C. R. Acad. Sci. Paris, Ser. I, Volume 347 (2009), pp. 467-472

[12] Thakur, D.S.; Wen, Z.-Y.; Yao, J.-Y.; Zhao, L. Transcendence in positive characteristic and special values of hypergeometric functions, J. Reine Angew. Math., Volume 657 (2011), pp. 135-171

[13] Villegas, F.R. Integral ratios of factorials and algebraic hypergeometric functions, 2007 | arXiv

[14] Wade, L.I. Remarks on the Carlitz ψ-functions, Duke Math. J., Volume 11 (1944), pp. 755-758

[15] Weiss, E. Algebraic Number Theory, Dover, 1998

[16] Yao, J.-Y. Some transcendental functions over function fields with positive characteristic, C. R. Acad. Sci. Paris, Ser. I, Volume 334 (2002), pp. 939-943

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