thus or3a . <*0,0,0*> = ('not' FALSE) 'or' FALSE by Def15
.= 1 ; :: thesis: ( or3a . <*0,0,1*> = 1 & or3a . <*0,1,0*> = 1 & or3a . <*0,1,1*> = 1 & or3a . <*1,0,0*> = 0 & or3a . <*1,0,1*> = 1 & or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*0,0,1*> = (('not' FALSE) 'or' FALSE) 'or' TRUE by Def15
.= 1 ; :: thesis: ( or3a . <*0,1,0*> = 1 & or3a . <*0,1,1*> = 1 & or3a . <*1,0,0*> = 0 & or3a . <*1,0,1*> = 1 & or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*0,1,0*> = (('not' FALSE) 'or' TRUE) 'or' FALSE by Def15
.= 1 ; :: thesis: ( or3a . <*0,1,1*> = 1 & or3a . <*1,0,0*> = 0 & or3a . <*1,0,1*> = 1 & or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*0,1,1*> = (('not' FALSE) 'or' TRUE) 'or' TRUE by Def15
.= 1 ; :: thesis: ( or3a . <*1,0,0*> = 0 & or3a . <*1,0,1*> = 1 & or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*1,0,0*> = ('not' TRUE) 'or' FALSE by Def15
.= 0 ; :: thesis: ( or3a . <*1,0,1*> = 1 & or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*1,0,1*> = (('not' TRUE) 'or' FALSE) 'or' TRUE by Def15
.= 1 ; :: thesis: ( or3a . <*1,1,0*> = 1 & or3a . <*1,1,1*> = 1 )
thus or3a . <*1,1,0*> = TRUE 'or' FALSE by Def15
.= 1 ; :: thesis: or3a . <*1,1,1*> = 1
thus or3a . <*1,1,1*> = (('not' TRUE) 'or' TRUE) 'or' TRUE by Def15
.= 1 ; :: thesis: verum