设P是n-立方体图Qn的完备控制集.在1994年,Weichsel证明了存在某些整数r1,r2,…,rm使P在Qn中的诱导子图(P)为Qr1,Qr2,…,Qrm的不交之并,并且猜想r1=r2=…=rm.本文证明了当m≤20时,该猜想正确.
Let P be a perfect dominating set of the n-cube Qn. In 1994 Weichsel proved that the induced subgraph (P) of P in Qn is the disjoint union of copies of cubes {Qr1, Qr2,…, Qrm} for some set of integers {rl, r2,…,rm} and conjectured that r1=r2=…=rm. In this paper we show that the conjecture is true for m ≤ 20..