Abstract:
In this work is given the description of Hamiltonian algebras in
some subclasses of class of algebras with operators having one
ternary basic operation and one operator. Universal algebra A is a
Hamiltonian algebra if every subuniverse of A is the block of some
congruence of the algebra A. Algebra with operators is an
universal algebra with additional system of the unary operations
acting as endomorphisms with respect to basic operations. These
operations are called permutable with basic operations. An algebra
with operators is ternary if it has exactly one basic operation
and this operation is ternary.
It is obtained the sufficient condition of Hamiltonity for
arbitrary universal algebras with operators. It is described
Hamiltonian algebras in classes of ternary algebras with one
operator and with basic operation that is either Pixley operation,
or minority function, or majority function of special view.
Let $V$ be a variety of algebras with operators and $V$ has
signature $\Omega_1 \cup \Omega_2$, where $\Omega_1$ is an
arbitrary signature containing near-unanimity function and
$\Omega_2$ is a set of operators. It is proved that $V$ not
contains nontrivial Abelian algebras.