Mathbox for Glauco Siliprandi < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  ovnovollem3 Structured version   Visualization version   GIF version

Theorem ovnovollem3 39548
 Description: The 1-dimensional Lebesgue outer measure agrees with the Lebesgue outer measure on subsets of Real numbers. (Contributed by Glauco Siliprandi, 3-Mar-2021.)
Hypotheses
Ref Expression
ovnovollem3.a (𝜑𝐴𝑉)
ovnovollem3.b (𝜑𝐵 ⊆ ℝ)
ovnovollem3.m 𝑀 = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))}
ovnovollem3.n 𝑁 = {𝑧 ∈ ℝ* ∣ ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))}
Assertion
Ref Expression
ovnovollem3 (𝜑 → ((voln*‘{𝐴})‘(𝐵𝑚 {𝐴})) = (vol*‘𝐵))
Distinct variable groups:   𝐴,𝑓,𝑖,𝑗,𝑘,𝑧   𝐵,𝑓,𝑖,𝑗,𝑘,𝑧   𝑧,𝑁   𝑘,𝑉   𝜑,𝑓,𝑖,𝑗,𝑘,𝑧
Allowed substitution hints:   𝑀(𝑧,𝑓,𝑖,𝑗,𝑘)   𝑁(𝑓,𝑖,𝑗,𝑘)   𝑉(𝑧,𝑓,𝑖,𝑗)

Proof of Theorem ovnovollem3
Dummy variables 𝑛 𝑙 𝑚 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ovnovollem3.a . . . . 5 (𝜑𝐴𝑉)
2 snnzg 4251 . . . . 5 (𝐴𝑉 → {𝐴} ≠ ∅)
31, 2syl 17 . . . 4 (𝜑 → {𝐴} ≠ ∅)
43neneqd 2787 . . 3 (𝜑 → ¬ {𝐴} = ∅)
54iffalsed 4047 . 2 (𝜑 → if({𝐴} = ∅, 0, inf(𝑀, ℝ*, < )) = inf(𝑀, ℝ*, < ))
6 snfi 7923 . . . 4 {𝐴} ∈ Fin
76a1i 11 . . 3 (𝜑 → {𝐴} ∈ Fin)
8 reex 9906 . . . . 5 ℝ ∈ V
98a1i 11 . . . 4 (𝜑 → ℝ ∈ V)
10 ovnovollem3.b . . . 4 (𝜑𝐵 ⊆ ℝ)
11 mapss 7786 . . . 4 ((ℝ ∈ V ∧ 𝐵 ⊆ ℝ) → (𝐵𝑚 {𝐴}) ⊆ (ℝ ↑𝑚 {𝐴}))
129, 10, 11syl2anc 691 . . 3 (𝜑 → (𝐵𝑚 {𝐴}) ⊆ (ℝ ↑𝑚 {𝐴}))
13 ovnovollem3.m . . 3 𝑀 = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))}
147, 12, 13ovnval2 39435 . 2 (𝜑 → ((voln*‘{𝐴})‘(𝐵𝑚 {𝐴})) = if({𝐴} = ∅, 0, inf(𝑀, ℝ*, < )))
15 ovnovollem3.n . . . 4 𝑁 = {𝑧 ∈ ℝ* ∣ ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))}
1610, 15ovolval5 39545 . . 3 (𝜑 → (vol*‘𝐵) = inf(𝑁, ℝ*, < ))
171ad2antrr 758 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐴𝑉)
18 simplr 788 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ))
19 fveq2 6103 . . . . . . . . . . . . . 14 (𝑛 = 𝑗 → (𝑓𝑛) = (𝑓𝑗))
2019opeq2d 4347 . . . . . . . . . . . . 13 (𝑛 = 𝑗 → ⟨𝐴, (𝑓𝑛)⟩ = ⟨𝐴, (𝑓𝑗)⟩)
2120sneqd 4137 . . . . . . . . . . . 12 (𝑛 = 𝑗 → {⟨𝐴, (𝑓𝑛)⟩} = {⟨𝐴, (𝑓𝑗)⟩})
2221cbvmptv 4678 . . . . . . . . . . 11 (𝑛 ∈ ℕ ↦ {⟨𝐴, (𝑓𝑛)⟩}) = (𝑗 ∈ ℕ ↦ {⟨𝐴, (𝑓𝑗)⟩})
23 simprl 790 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐵 ran ([,) ∘ 𝑓))
249, 10ssexd 4733 . . . . . . . . . . . . 13 (𝜑𝐵 ∈ V)
2524adantr 480 . . . . . . . . . . . 12 ((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) → 𝐵 ∈ V)
2625adantr 480 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐵 ∈ V)
27 simprr 792 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))
2817, 18, 22, 23, 26, 27ovnovollem1 39546 . . . . . . . . . 10 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))))))
29283impa 1251 . . . . . . . . 9 ((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))))))
30293exp 1256 . . . . . . . 8 (𝜑 → (𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ) → ((𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓))) → ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))))))))
3130rexlimdv 3012 . . . . . . 7 (𝜑 → (∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓))) → ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))))
3213ad2ant1 1075 . . . . . . . . . 10 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → 𝐴𝑉)
33243ad2ant1 1075 . . . . . . . . . 10 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → 𝐵 ∈ V)
34 simp2 1055 . . . . . . . . . 10 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → 𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ))
35 simp3l 1082 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → (𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘))
36 fveq2 6103 . . . . . . . . . . . . . . . . . 18 (𝑗 = 𝑛 → (𝑖𝑗) = (𝑖𝑛))
3736coeq2d 5206 . . . . . . . . . . . . . . . . 17 (𝑗 = 𝑛 → ([,) ∘ (𝑖𝑗)) = ([,) ∘ (𝑖𝑛)))
3837fveq1d 6105 . . . . . . . . . . . . . . . 16 (𝑗 = 𝑛 → (([,) ∘ (𝑖𝑗))‘𝑘) = (([,) ∘ (𝑖𝑛))‘𝑘))
3938ixpeq2dv 7810 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘))
40 fveq2 6103 . . . . . . . . . . . . . . . . 17 (𝑘 = 𝑙 → (([,) ∘ (𝑖𝑛))‘𝑘) = (([,) ∘ (𝑖𝑛))‘𝑙))
4140cbvixpv 7812 . . . . . . . . . . . . . . . 16 X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙)
4241a1i 11 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4339, 42eqtrd 2644 . . . . . . . . . . . . . 14 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4443cbviunv 4495 . . . . . . . . . . . . 13 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙)
4544sseq2i 3593 . . . . . . . . . . . 12 ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ↔ (𝐵𝑚 {𝐴}) ⊆ 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4645biimpi 205 . . . . . . . . . . 11 ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) → (𝐵𝑚 {𝐴}) ⊆ 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4735, 46syl 17 . . . . . . . . . 10 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → (𝐵𝑚 {𝐴}) ⊆ 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
48 simp3r 1083 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))
4938fveq2d 6107 . . . . . . . . . . . . . . . . 17 (𝑗 = 𝑛 → (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)))
5049prodeq2ad 38659 . . . . . . . . . . . . . . . 16 (𝑗 = 𝑛 → ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)))
5140fveq2d 6107 . . . . . . . . . . . . . . . . . 18 (𝑘 = 𝑙 → (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)) = (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5251cbvprodv 14485 . . . . . . . . . . . . . . . . 17 𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)) = ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙))
5352a1i 11 . . . . . . . . . . . . . . . 16 (𝑗 = 𝑛 → ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)) = ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5450, 53eqtrd 2644 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛 → ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5554cbvmptv 4678 . . . . . . . . . . . . . 14 (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))) = (𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5655fveq2i 6106 . . . . . . . . . . . . 13 ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))) = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙))))
5756eqeq2i 2622 . . . . . . . . . . . 12 (𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))) ↔ 𝑧 = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))))
5857biimpi 205 . . . . . . . . . . 11 (𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))) → 𝑧 = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))))
5948, 58syl 17 . . . . . . . . . 10 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → 𝑧 = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))))
60 fveq2 6103 . . . . . . . . . . . 12 (𝑚 = 𝑛 → (𝑖𝑚) = (𝑖𝑛))
6160fveq1d 6105 . . . . . . . . . . 11 (𝑚 = 𝑛 → ((𝑖𝑚)‘𝐴) = ((𝑖𝑛)‘𝐴))
6261cbvmptv 4678 . . . . . . . . . 10 (𝑚 ∈ ℕ ↦ ((𝑖𝑚)‘𝐴)) = (𝑛 ∈ ℕ ↦ ((𝑖𝑛)‘𝐴))
6332, 33, 34, 47, 59, 62ovnovollem2 39547 . . . . . . . . 9 ((𝜑𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) ∧ ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))) → ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓))))
64633exp 1256 . . . . . . . 8 (𝜑 → (𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ) → (((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))))) → ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓))))))
6564rexlimdv 3012 . . . . . . 7 (𝜑 → (∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))))) → ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))))
6631, 65impbid 201 . . . . . 6 (𝜑 → (∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓))) ↔ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))))
6766rabbidv 3164 . . . . 5 (𝜑 → {𝑧 ∈ ℝ* ∣ ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))} = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))})
6815a1i 11 . . . . 5 (𝜑𝑁 = {𝑧 ∈ ℝ* ∣ ∃𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)(𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))})
6913a1i 11 . . . . 5 (𝜑𝑀 = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 {𝐴}) ↑𝑚 ℕ)((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))})
7067, 68, 693eqtr4d 2654 . . . 4 (𝜑𝑁 = 𝑀)
7170infeq1d 8266 . . 3 (𝜑 → inf(𝑁, ℝ*, < ) = inf(𝑀, ℝ*, < ))
7216, 71eqtrd 2644 . 2 (𝜑 → (vol*‘𝐵) = inf(𝑀, ℝ*, < ))
735, 14, 723eqtr4d 2654 1 (𝜑 → ((voln*‘{𝐴})‘(𝐵𝑚 {𝐴})) = (vol*‘𝐵))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∃wrex 2897  {crab 2900  Vcvv 3173   ⊆ wss 3540  ∅c0 3874  ifcif 4036  {csn 4125  ⟨cop 4131  ∪ cuni 4372  ∪ ciun 4455   ↦ cmpt 4643   × cxp 5036  ran crn 5039   ∘ ccom 5042  ‘cfv 5804  (class class class)co 6549   ↑𝑚 cmap 7744  Xcixp 7794  Fincfn 7841  infcinf 8230  ℝcr 9814  0cc0 9815  ℝ*cxr 9952   < clt 9953  ℕcn 10897  [,)cico 12048  ∏cprod 14474  vol*covol 23038  volcvol 23039  Σ^csumge0 39255  voln*covoln 39426 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fi 8200  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-n0 11170  df-z 11255  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-ioo 12050  df-ico 12052  df-icc 12053  df-fz 12198  df-fzo 12335  df-fl 12455  df-seq 12664  df-exp 12723  df-hash 12980  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-clim 14067  df-rlim 14068  df-sum 14265  df-prod 14475  df-rest 15906  df-topgen 15927  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-mopn 19563  df-top 20521  df-bases 20522  df-topon 20523  df-cmp 21000  df-ovol 23040  df-vol 23041  df-sumge0 39256  df-ovoln 39427 This theorem is referenced by:  ovnovol  39549
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