let A be non empty set ; :: thesis: ComplexFuncZero A <> ComplexFuncUnit A
set a = the Element of A;
(ComplexFuncZero A) . the Element of A = 0c by FUNCOP_1:7;
hence ComplexFuncZero A <> ComplexFuncUnit A by COMPLEX1:def 4, FUNCOP_1:7; :: thesis: verum