Annales Mathematicae Silesianae. T. 12

Foreword
Krystyna M. BARTZ: On Carlitz theorem for Bernoulli polynomials
Tadeusz PEZDA: Cycles of rational mappings in algebraically closed fields of positive Characteristics
Jan KREMPA: On reduced rings and number theory
Andrzej SCHINZEL: On Pythagorean triangles
Ivan KOREC: Additive conditions on sums of squares
Kazimierz SZYMICZEK: 2 - ranks of class groups of Witt equivalent number fields
Otokar GRO?EK, Karol NEMOGA, Ladislav SATKO: Remarks to short RSA public exponents
Stanislav JAKUBEC, Miroslav LA??ÁK: Congruence of Ankeny - Artin - Chowla type modulo p2
Andrzej SŁADEK, Adam WESOŁOWSKI: Clifford-Littlewood-Eckmann groups as orthogonal groups of forms of
higher degree
Alfred CZOGAŁA: Generators of the Witt groups of algebraic integers
Jozsef BUKOR, Péter FILAKOVSZKY, János T. TÓTH: On the diophantine equation x1 x2 ... xn = h (n) (x1 + ... +x2
+ ...+xn)
Krzysztof KOZIOŁ, Mieczysław KULA: Witt rings og infinite algebraic extensions of global Fields
Grzegorz BANASZAK: Mod p. logarithms log2 3 and log3 2 differ for infinitely many primes
Stefan PORUBSKÝ: Sets of regular systems of divisors of a generalized integer
Stanislav JAKUBEC: Prime periods of periodical P.-additive functions
Thomas C. PALFREY: Density theorems for reciprocity equivalences