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 [;] (d,f)) = F [;] ((u . d),(u * f))
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 [;] (d,f)) = F [;] ((u . d),(u * f))
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 [;] (d,f)) = F [;] ((u . d),(u * f))
let F be BinOp of D; for u being UnOp of D st u is_distributive_wrt F holds
u * (F [;] (d,f)) = F [;] ((u . d),(u * f))
let u be UnOp of D; ( u is_distributive_wrt F implies u * (F [;] (d,f)) = F [;] ((u . d),(u * f)) )
assume
for d1, d2 being Element of D holds u . (F . (d1,d2)) = F . ((u . d1),(u . d2))
; BINOP_1:def 20 u * (F [;] (d,f)) = F [;] ((u . d),(u * f))
hence
u * (F [;] (d,f)) = F [;] ((u . d),(u * f))
by Th39; verum