作者: L.F. Escudero
DOI: 10.1016/0377-2217(88)90333-5
关键词:
摘要: … sequential ordering such that its h-th element so h gives the node that is sequenced in the level h for h = 1, 2 ..... IN I- Let nl -on 2 denote a partial order… with the partial ordering nl -o n2. …