(FUNDAMENTAL AND APPLIED MATHEMATICS)

2002, VOLUME 8, NUMBER 2, PAGES 631-635

## On positive theories of semigroup varieties and pseudovarieties

V. Yu. Popov

Abstract

View as HTML     View as gif image    View as LaTeX source

Let $\mathcal P$ be a positive language, $\mathcal L \subseteq \mathcal P$, then $\mathcal L\mathfrak X = \mathcal L\mathfrak X \cap \mathfrak F$, where $\mathfrak X$ is a nonperiodic semigroup variety and $\mathfrak X \cap \mathfrak F$ is a finite trace of the variety $\mathfrak X$.

All articles are published in Russian.

Location: http://mech.math.msu.su/~fpm/eng/k02/k022/k02218h.htm