2.Abstract: Bipartite graphs with P-regular endomorphism monoids are characterized.P-regularity of the endomorphism monoid of lexicographic product of graphs is discussed.
摘要 :刻划了具有P-自同态幺半群二分图,讨论了字典序积图自同态幺半群P-.
3.... but then they are sorted after the unaccented letters (for example, the correct lexicographic order is baa, baá, báa, bab, báb, bac, bác, bač, bá...