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exponent
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AutomataTheory
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At:
auto2
lemma
6
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1.
n:
2.
0 < n
3.
T:
Type
4.
R:
T
Prop
5.
f:
n
T
6.
Bij(
n; T; f)
7.
t:T. Dec(R(t))
Bij(
(n-1); {t:T|
t = f(n-1) }; f)
By:
Analyze 0
Generated subgoals:
1
Inj(
(n-1); {t:T|
t = f(n-1) }; f)
2
Surj(
(n-1); {t:T|
t = f(n-1) }; f)
About:
Inj(
(n-1); {t:T| 
t = f(n-1) }; f) Surj((n-1); {t:T| t = f(n-1) }; f)
PropnTn; T; f)
t:T. Dec(R(t)) Bij((n-1); {t:T| t = f(n-1) }; f) Inj((n-1); {t:T| t = f(n-1) }; f) Surj((n-1); {t:T| t = f(n-1) }; f)
