let C, D be non empty set ; for d being Element of D
for f being Function of C,D
for F being BinOp of D
for u being UnOp of D st u is_distributive_wrt F holds
u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
let d be Element of D; for f being Function of C,D
for F being BinOp of D
for u being UnOp of D st u is_distributive_wrt F holds
u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
let f be Function of C,D; for F being BinOp of D
for u being UnOp of D st u is_distributive_wrt F holds
u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
let F be BinOp of D; for u being UnOp of D st u is_distributive_wrt F holds
u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
let u be UnOp of D; ( u is_distributive_wrt F implies u * (F [:] (f,d)) = F [:] ((u * f),(u . d)) )
assume
for d1, d2 being Element of D holds u . (F . (d1,d2)) = F . ((u . d1),(u . d2))
; BINOP_1:def 20 u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
hence
u * (F [:] (f,d)) = F [:] ((u * f),(u . d))
by Th40; verum