Some Results of Lee's Conjecture
Caikun Liu · Journal of Hebei Normal University · 2009
Lee has proposed the conjecture:for any positive integer n1 and any permutation f in S(n),the permutation graph P(Pn,f) is graceful.For any integer n1 and permutation f in S(n), the gracefulness of the permutation graph P(Pn,f) is discussed if f=∏l1k=0(m+2k,m+2k+1) for any positive integers m and l,and f=∏l-1k=0(m+4k,m+4k+2)(m+4k+1,m+4k+3) for positive integers m and l,satisfied m-1+4l≤n.