theorem (I-TruthEval (<*l*>^phi) = TRUE iff
(ex u st ((l,u) ReassignIn I)-TruthEval phi=1) ) &
(I-TruthEval (<*TheNorSymbOf S*>^phi1^phi2) = TRUE iff
(I-TruthEval phi1 = FALSE & I-TruthEval phi2 = FALSE)) by Lm35, Lm37;
