Bivalent BAM theorem -The average signal energy L of the forward pass of theFx Signal state vector S(X)through M,and the backward pass Of the Fy signal state vectorS(Y)through M?: L=一 S(X)MS(Y)+S(Y)M'S(X) 2 since S(M'S(X)=[S(MS(X) =S(X)MS(Y) L=-SX)MSY)y=-∑∑S(x,)S,Oy,m 22 Bivalent BAM theorem The average signal energy L of the forward pass of the Signal state vector through M,and the backward pass Of the signal state vector through : FX S(X) T FY S(Y) M 2 ( ) ( ) ( ) ( ) T T T S X MS Y S Y M S X L + = − T T T T T S(Y)M S(X) =[S(Y)M S(X) ] T = S(X)MS(Y) since T L = −S(X)MS(Y) i j n i p j = −Si (xi )S j ( y j )m