Primitive elements of free non-associative algebras over finite fields

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Abstract

The representation of elements of free non-associative algebras as a set of multidimensional tables of coefficients is defined. An operation for finding partial derivatives for elements of free non-associative algebras in the same form is considered. Using this representation, a criterion of primitivity for elements of lengths 2 and 3 in terms of matrix ranks, as well as a primitivity test for elements of arbitrary length, is derived. This test makes it possible to estimate the number of primitive elements in free non-associative algebras with two generators over a finite field. The proposed representation allows us to optimize algorithms for symbolic computations with primitive elements. Using these algorithms, we find the number of primitive elements of length 4 in a free non-associative algebra of rank 2 over a finite field.

About the authors

M. V. Maisuradze

Moscow State University

Author for correspondence.
Email: maisuradzemv@my.msu.ru

Department of Mechanics and Mathematics

Russian Federation, Moscow, 119991

А. А. Mikhalev

Moscow State University

Email: aamikhalev@mail.ru

Department of Mechanics and Mathematics

Russian Federation, Moscow, 119991

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