Hamiltonian properties of lexicographic products Jakub Teska Abstract The lexicographic product G[H] of two graphs G and H is obtained from G by replacing each vertex with a copy of H and adding all edges between any pair of copies corresponding to adjacent vertices of G. We generalize the lexicographic product such that we replace each vertex of G with arbitrary graph on the same number of vertices. We present sufficient and necessary conditions for traceability, hamiltonicity and hamiltonian connectivity of G[H] if G is a path.