let R be non empty RelStr ; :: thesis: for T being non empty 1-sorted
for p being Element of T holds the_value_of (ConstantNet R,p) = p
let T be non empty 1-sorted ; :: thesis: for p being Element of T holds the_value_of (ConstantNet R,p) = p
let p be Element of T; :: thesis: the_value_of (ConstantNet R,p) = p
thus the_value_of (ConstantNet R,p) = the_value_of the mapping of (ConstantNet R,p) by Def10
.= the_value_of (the carrier of (ConstantNet R,p) --> p) by Def7
.= p by FUNCOP_1:94 ; :: thesis: verum