let x, y, c be non pair object ; for s being State of (MajorityCirc (x,y,c))
for a1, a2 being Element of BOOLEAN st a1 = s . x & a2 = s . y holds
(Following s) . [<*x,y*>,'&'] = a1 '&' a2
reconsider a = c as Vertex of (MajorityStr (x,y,c)) by Th72;
let s be State of (MajorityCirc (x,y,c)); for a1, a2 being Element of BOOLEAN st a1 = s . x & a2 = s . y holds
(Following s) . [<*x,y*>,'&'] = a1 '&' a2
s . a is Element of BOOLEAN
;
hence
for a1, a2 being Element of BOOLEAN st a1 = s . x & a2 = s . y holds
(Following s) . [<*x,y*>,'&'] = a1 '&' a2
by Lm2; verum