Department of Mathematics, University of Tabuk, Tabuk 71491, Saudi Arabia
Abstract
The notion of (regular) left (h,/)-derivations of a BCI-algebra is introduced, some useful examples are discussed, and related properties are investigated. Conditions for a left (h,/)-derivation to be regular are provided. The concepts of a d(h,/)-invariant left (h,/)-derivation and h-ideal are introduced, and their relations are discussed. Furthermore, some more interesting results are established.
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