Step
*
1
of Lemma
equipollent_interval
1. a : ℤ@i
2. b : ℤ@i
⊢ ∃f:{a..b-} ⟶ ℕb - a. Bij({a..b-};ℕb - a;f)
BY
{ ((InstConcl [⌜λn.(n - a)⌝])⋅ THENA Auto') }
1
1. a : ℤ@i
2. b : ℤ@i
⊢ Bij({a..b-};ℕb - a;λn.(n - a))
Latex:
Latex:
1. a : \mBbbZ{}@i
2. b : \mBbbZ{}@i
\mvdash{} \mexists{}f:\{a..b\msupminus{}\} {}\mrightarrow{} \mBbbN{}b - a. Bij(\{a..b\msupminus{}\};\mBbbN{}b - a;f)
By
Latex:
((InstConcl [\mkleeneopen{}\mlambda{}n.(n - a)\mkleeneclose{}])\mcdot{} THENA Auto')
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