%L publicatio28141 %X We study centralizer clones of finite lattices and semilattices. For semilattices, we give two characterizations of the centralizer and also derive formulas for the number of operations of a given essential arity in the centralizer. We also characterize operations in the centralizer clone of a distributive lattice, and we prove that the essential arity of operations in the centralizer is bounded for every finite (possibly nondistributive) lattice. Using these results, we present a simple derivation for the centralizers of clones of Boolean functions. %V 36 %D 2021 %I szte %J JOURNAL OF MULTIPLE-VALUED LOGIC AND SOFT COMPUTING %P 405-436 %R MTMT:32109644 %T On Centralizers of Finite Lattices and Semilattices %N 4-5 %A TĂłth Endre %A Waldhauser TamĂĄs