power) == if power=
0
1 else base
(basepower-1) fi (recursive)
Thm* 
n,k:
. (nk) 
Thm* n,k:. (nk)
j == if i=j true ; false fi
Thm* i,j:. i=j 
| exp |
Def (basepower) == if power=0 1 else base(basepower-1) fi (recursive)
Thm*
Thm* |
| eq_int |
Def i=j == if i=j true ; false fi
Thm* |
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