ON NIL-ELEMENTS AND IDEMPOTENTS IN THE SIMPLE THREE-DIMENSIONAL COMMUTATIVE UNITAL ALGEBRAS
摘要
We study simple 3-dimensional commutative unital algebras containing nil-elements of index 3 in which nil-elements of index 2 are absent. We prove that each such algebra depends on either one or two parameters. For each of the parametric algebras, we find their idempotents and nil-elements under some natural restrictions on the parameters. In addition, we study idempotents and nil-elements in one isotope of some special algebra.