
 Alph*
Alph*
 Prop
Prop

 x:Alph*. R(x,x))
 &  (
x:Alph*. R(x,x))
 &  ( x,y:Alph*. R(x,y)
x,y:Alph*. R(x,y) 
 R(y,x))
 &  (
 R(y,x))
 &  ( x,y,z:Alph*. R(x,y)  &  R(y,z)
x,y,z:Alph*. R(x,y)  &  R(y,z) 
 R(x,z))
 &  (
 R(x,z))
 &  ( x,y,z:Alph*. R(x,y)
x,y,z:Alph*. R(x,y) 
 R((z @ x),z @ y))
 &  (
 R((z @ x),z @ y))
 &  ( w:(
w:( n
n
 Alph*).
Alph*).  l:Alph*.
l:Alph*.  i:
i: n. R(l,w(i)))
n. R(l,w(i))) P:(Alph*
P:(Alph*
 Prop). 
(
Prop). 
( n:
n: . (
. ( l:Alph*. ||l|| < n
l:Alph*. ||l|| < n 
 P(l))
 P(l)) 
 (
 ( l:Alph*. ||l|| = n
l:Alph*. ||l|| = n 
 P(l)))
 P(l))) 
 (
 ( l:Alph*. P(l))
l:Alph*. P(l)) 
  a':Alph*. ||a'|| < n
a':Alph*. ||a'|| < n n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c)
n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c) a.
a. a':Alph*. ||a'|| < n
a':Alph*. ||a'|| < n n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c)
n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c)| 1 | 8. (  n@0:  . 
 (  l:Alph*. ||l|| < n@0   (  a.  a':Alph*. ||a'|| < n  n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c))(l))   (  l:Alph*. ||l|| = n@0   (  a.  a':Alph*. ||a'|| < n  n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c))(l)))   (  l:Alph*. (  a.  a':Alph*. ||a'|| < n  n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c))(l))    a':Alph*. ||a'|| < n  n  &  R((a @ b),a' @ b)  &  R((a @ c),a' @ c) | 
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