The concept of a crossed tensor product of algebras is studied from a few
points of views. Some related constructions are considered. Crossed enveloping
algebras and their representations are discussed. Applications to the
noncommutative geometry and particle systems with generalized statistics are
indicated.Comment: 20 pages, latex2e (latexsym), no figures, accepted for publication in
J. Math. Phys. 41 no10 (2000