let Al be QC-alphabet ; for A being non empty set
for x being bound_QC-variable of Al
for p being Element of CQC-WFF Al
for J being interpretation of Al,A holds J |= (All (x,p)) => p
let A be non empty set ; for x being bound_QC-variable of Al
for p being Element of CQC-WFF Al
for J being interpretation of Al,A holds J |= (All (x,p)) => p
let x be bound_QC-variable of Al; for p being Element of CQC-WFF Al
for J being interpretation of Al,A holds J |= (All (x,p)) => p
let p be Element of CQC-WFF Al; for J being interpretation of Al,A holds J |= (All (x,p)) => p
let J be interpretation of Al,A; J |= (All (x,p)) => p
let v be Element of Valuations_in (Al,A); VALUAT_1:def 8 J,v |= (All (x,p)) => p
thus
J,v |= (All (x,p)) => p
by Th38; verum