let F be non empty Graph-yielding Function; for z being Element of dom F holds canGFDistinction F, canGFDistinction (F,z) are_Disomorphic
let z be Element of dom F; canGFDistinction F, canGFDistinction (F,z) are_Disomorphic
A1:
canGFDistinction F,F are_Disomorphic
by Th87;
F, canGFDistinction (F,z) are_Disomorphic
by Th105;
hence
canGFDistinction F, canGFDistinction (F,z) are_Disomorphic
by A1, Th40; verum