Bulletin of the
Korean Mathematical Society
BKMS

ISSN(Print) 1015-8634 ISSN(Online) 2234-3016

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Bull. Korean Math. Soc. 2004; 41(3): 451-456

Printed September 1, 2004

Copyright © The Korean Mathematical Society.

Distribution of values of functions over finite fields

Hi-joon Chae

Hongik University

Abstract

Given a function on a scheme over a finite field, we can count the number of rational points of the scheme having the same values. We show that if the function, viewed as a morphism to the affine line, is proper and its higher direct image sheaves are tamely ramified at the infinity then the values are uniformly distributed up to some degree.

Keywords: distribution, values of functions, finite fields

MSC numbers: 11T23, 11G25, 14G15