GENERALIZED (f; g)-DERIVATIONS OF LATTICES

In this paper as a generalization of derivation and f -derivation ona lattice we introduce the notion of generalized (f, g)-derivation of a lattice.We give illustrative example. If the function g is equal to the function f thenthe generalized (f, g)-derivation is the f -derivation defined in [8]. Also if wechoose the function f and g the identity functions both then the derivation wedefine coincides with the derivation defined in [22]