Step
*
1
1
1
1
of Lemma
es-interface-extensionality
1. A : Type
2. v : bag(A)@i
3. v1 : bag(A)@i
4. #(v) ≤ 1@i
5. #(v1) ≤ 1@i
6. #(v) = 1 ∈ ℤ
7. #(v1) = 1 ∈ ℤ
8. True
⇐ True@i
9. True@i
10. only(v) = only(v1) ∈ A@i
⊢ v = v1 ∈ bag(A)
BY
{ (MoveToConcl (-1) THEN ElimBagSizeOne'⋅ THEN Reduce 0 THEN Auto) }
Latex:
1. A : Type
2. v : bag(A)@i
3. v1 : bag(A)@i
4. \#(v) \mleq{} 1@i
5. \#(v1) \mleq{} 1@i
6. \#(v) = 1
7. \#(v1) = 1
8. True \mLeftarrow{}{} True@i
9. True@i
10. only(v) = only(v1)@i
\mvdash{} v = v1
By
(MoveToConcl (-1) THEN ElimBagSizeOne'\mcdot{} THEN Reduce 0 THEN Auto)
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