let n2, n3, n4, n5, n6, n1 be Element of NAT ; for S being Gene-Set
for p1, p2 being Individual of S holds
( crossover p1,p2,0 ,n2,n3,n4,n5,n6 = crossover p2,p1,n2,n3,n4,n5,n6 & crossover p1,p2,n1,0 ,n3,n4,n5,n6 = crossover p2,p1,n1,n3,n4,n5,n6 & crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6 & crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
let S be Gene-Set; for p1, p2 being Individual of S holds
( crossover p1,p2,0 ,n2,n3,n4,n5,n6 = crossover p2,p1,n2,n3,n4,n5,n6 & crossover p1,p2,n1,0 ,n3,n4,n5,n6 = crossover p2,p1,n1,n3,n4,n5,n6 & crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6 & crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
let p1, p2 be Individual of S; ( crossover p1,p2,0 ,n2,n3,n4,n5,n6 = crossover p2,p1,n2,n3,n4,n5,n6 & crossover p1,p2,n1,0 ,n3,n4,n5,n6 = crossover p2,p1,n1,n3,n4,n5,n6 & crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6 & crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
crossover p1,p2,0 ,n2,n3,n4,n5,n6 =
crossover (crossover p2,p1,n2,n3,n4,n5),(crossover p2,p1,0 ,n2,n3,n4,n5),n6
by Th41
.=
crossover (crossover p2,p1,n2,n3,n4,n5),(crossover p1,p2,n2,n3,n4,n5),n6
by Th41
;
hence
crossover p1,p2,0 ,n2,n3,n4,n5,n6 = crossover p2,p1,n2,n3,n4,n5,n6
; ( crossover p1,p2,n1,0 ,n3,n4,n5,n6 = crossover p2,p1,n1,n3,n4,n5,n6 & crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6 & crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
crossover p1,p2,n1,0 ,n3,n4,n5,n6 =
crossover (crossover p2,p1,n1,n3,n4,n5),(crossover p2,p1,n1,0 ,n3,n4,n5),n6
by Th41
.=
crossover (crossover p2,p1,n1,n3,n4,n5),(crossover p1,p2,n1,n3,n4,n5),n6
by Th41
;
hence
crossover p1,p2,n1,0 ,n3,n4,n5,n6 = crossover p2,p1,n1,n3,n4,n5,n6
; ( crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6 & crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
crossover p1,p2,n1,n2,0 ,n4,n5,n6 =
crossover (crossover p2,p1,n1,n2,n4,n5),(crossover p2,p1,n1,n2,0 ,n4,n5),n6
by Th41
.=
crossover (crossover p2,p1,n1,n2,n4,n5),(crossover p1,p2,n1,n2,n4,n5),n6
by Th41
;
hence
crossover p1,p2,n1,n2,0 ,n4,n5,n6 = crossover p2,p1,n1,n2,n4,n5,n6
; ( crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6 & crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
crossover p1,p2,n1,n2,n3,0 ,n5,n6 =
crossover (crossover p2,p1,n1,n2,n3,n5),(crossover p2,p1,n1,n2,n3,0 ,n5),n6
by Th41
.=
crossover (crossover p2,p1,n1,n2,n3,n5),(crossover p1,p2,n1,n2,n3,n5),n6
by Th41
;
hence
crossover p1,p2,n1,n2,n3,0 ,n5,n6 = crossover p2,p1,n1,n2,n3,n5,n6
; ( crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6 & crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5 )
crossover p1,p2,n1,n2,n3,n4,0 ,n6 =
crossover (crossover p2,p1,n1,n2,n3,n4),(crossover p2,p1,n1,n2,n3,n4,0 ),n6
by Th41
.=
crossover (crossover p2,p1,n1,n2,n3,n4),(crossover p1,p2,n1,n2,n3,n4),n6
by Th41
;
hence
crossover p1,p2,n1,n2,n3,n4,0 ,n6 = crossover p2,p1,n1,n2,n3,n4,n6
; crossover p1,p2,n1,n2,n3,n4,n5,0 = crossover p2,p1,n1,n2,n3,n4,n5
thus crossover p1,p2,n1,n2,n3,n4,n5,0 =
crossover (crossover p1,p2,n1,n2,n3,n4,n5),(crossover p2,p1,n1,n2,n3,n4,n5),0
.=
crossover p2,p1,n1,n2,n3,n4,n5
by Th4
; verum