Abstract Let be a locally finite preordered set, a two-torsion-free commutative ring with unity and the incidence algebra of X over In this paper, all the nonlinear Jordan derivations of… Click to show full abstract
Abstract Let be a locally finite preordered set, a two-torsion-free commutative ring with unity and the incidence algebra of X over In this paper, all the nonlinear Jordan derivations of are determined. In particular, if all the connected components of X are nontrivial, we prove that every nonlinear Jordan derivation of is proper and can be presented as a sum of an inner derivation, a transitive induced derivation, and an additive induced derivation.
               
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