Ngày tải lên :
07/08/2014, 08:22
... q 1 1 1 q p p p p p p p p p p p p p p p p p p p p p p p p 1 ˜ Figure 10: An example of Wp,q,B (P) the circled rook with label i by placing i’s in such cells We shall place a q or a p in those ... pnj Wp,q,Bi,j,n (P) wp,q,Bi,j,k (Q) = Wp,q,Bi,j,n (P )wp,q,Bi,j,k+11 (Q ) ˜ ˜ (97) But then n−k+1 p( )j W ˜ p, q,B k i,j,n n−k = p( )j p( n−k)j W ˜ p, q,B i,j,n = pnj q i+kj (p( n−k = − (p( (P) (pq)−( ... some rook in P q q x p q q p q q p q x p q p x ˜ Figure 9: An example of Wp,q,B (P) We then define the (p, q)-rook number of B (of type II) by rk,B (p, q) = ˜j j P Nk (B) ˜j Wp,q,B (P) (80) This...