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Theorem ovnovollem3 39345
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 4250 . . . . 5 (𝐴𝑉 → {𝐴} ≠ ∅)
31, 2syl 17 . . . 4 (𝜑 → {𝐴} ≠ ∅)
43neneqd 2786 . . 3 (𝜑 → ¬ {𝐴} = ∅)
54iffalsed 4046 . 2 (𝜑 → if({𝐴} = ∅, 0, inf(𝑀, ℝ*, < )) = inf(𝑀, ℝ*, < ))
6 snfi 7900 . . . 4 {𝐴} ∈ Fin
76a1i 11 . . 3 (𝜑 → {𝐴} ∈ Fin)
8 reex 9883 . . . . 5 ℝ ∈ V
98a1i 11 . . . 4 (𝜑 → ℝ ∈ V)
10 ovnovollem3.b . . . 4 (𝜑𝐵 ⊆ ℝ)
11 mapss 7763 . . . 4 ((ℝ ∈ V ∧ 𝐵 ⊆ ℝ) → (𝐵𝑚 {𝐴}) ⊆ (ℝ ↑𝑚 {𝐴}))
129, 10, 11syl2anc 690 . . 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 39232 . 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 39342 . . 3 (𝜑 → (vol*‘𝐵) = inf(𝑁, ℝ*, < ))
171ad2antrr 757 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐴𝑉)
18 simplr 787 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ))
19 fveq2 6088 . . . . . . . . . . . . . 14 (𝑛 = 𝑗 → (𝑓𝑛) = (𝑓𝑗))
2019opeq2d 4341 . . . . . . . . . . . . 13 (𝑛 = 𝑗 → ⟨𝐴, (𝑓𝑛)⟩ = ⟨𝐴, (𝑓𝑗)⟩)
2120sneqd 4136 . . . . . . . . . . . 12 (𝑛 = 𝑗 → {⟨𝐴, (𝑓𝑛)⟩} = {⟨𝐴, (𝑓𝑗)⟩})
2221cbvmptv 4672 . . . . . . . . . . 11 (𝑛 ∈ ℕ ↦ {⟨𝐴, (𝑓𝑛)⟩}) = (𝑗 ∈ ℕ ↦ {⟨𝐴, (𝑓𝑗)⟩})
23 simprl 789 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐵 ran ([,) ∘ 𝑓))
249, 10ssexd 4728 . . . . . . . . . . . . 13 (𝜑𝐵 ∈ V)
2524adantr 479 . . . . . . . . . . . 12 ((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) → 𝐵 ∈ V)
2625adantr 479 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝐵 ∈ V)
27 simprr 791 . . . . . . . . . . 11 (((𝜑𝑓 ∈ ((ℝ × ℝ) ↑𝑚 ℕ)) ∧ (𝐵 ran ([,) ∘ 𝑓) ∧ 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))) → 𝑧 = (Σ^‘((vol ∘ [,)) ∘ 𝑓)))
2817, 18, 22, 23, 26, 27ovnovollem1 39343 . . . . . . . . . 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 1250 . . . . . . . . 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 1255 . . . . . . . 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 3011 . . . . . . 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 1074 . . . . . . . . . 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 1074 . . . . . . . . . 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 1054 . . . . . . . . . 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 1081 . . . . . . . . . . 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 6088 . . . . . . . . . . . . . . . . . 18 (𝑗 = 𝑛 → (𝑖𝑗) = (𝑖𝑛))
3736coeq2d 5194 . . . . . . . . . . . . . . . . 17 (𝑗 = 𝑛 → ([,) ∘ (𝑖𝑗)) = ([,) ∘ (𝑖𝑛)))
3837fveq1d 6090 . . . . . . . . . . . . . . . 16 (𝑗 = 𝑛 → (([,) ∘ (𝑖𝑗))‘𝑘) = (([,) ∘ (𝑖𝑛))‘𝑘))
3938ixpeq2dv 7787 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘))
40 fveq2 6088 . . . . . . . . . . . . . . . . 17 (𝑘 = 𝑙 → (([,) ∘ (𝑖𝑛))‘𝑘) = (([,) ∘ (𝑖𝑛))‘𝑙))
4140cbvixpv 7789 . . . . . . . . . . . . . . . 16 X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙)
4241a1i 11 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4339, 42eqtrd 2643 . . . . . . . . . . . . . 14 (𝑗 = 𝑛X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4443cbviunv 4489 . . . . . . . . . . . . 13 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) = 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙)
4544sseq2i 3592 . . . . . . . . . . . 12 ((𝐵𝑚 {𝐴}) ⊆ 𝑗 ∈ ℕ X𝑘 ∈ {𝐴} (([,) ∘ (𝑖𝑗))‘𝑘) ↔ (𝐵𝑚 {𝐴}) ⊆ 𝑛 ∈ ℕ X𝑙 ∈ {𝐴} (([,) ∘ (𝑖𝑛))‘𝑙))
4645biimpi 204 . . . . . . . . . . 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 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)))))) → 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))))
4938fveq2d 6092 . . . . . . . . . . . . . . . . 17 (𝑗 = 𝑛 → (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)))
5049prodeq2ad 38456 . . . . . . . . . . . . . . . 16 (𝑗 = 𝑛 → ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)))
5140fveq2d 6092 . . . . . . . . . . . . . . . . . 18 (𝑘 = 𝑙 → (vol‘(([,) ∘ (𝑖𝑛))‘𝑘)) = (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5251cbvprodv 14431 . . . . . . . . . . . . . . . . 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 2643 . . . . . . . . . . . . . . 15 (𝑗 = 𝑛 → ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)) = ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5554cbvmptv 4672 . . . . . . . . . . . . . 14 (𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘))) = (𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))
5655fveq2i 6091 . . . . . . . . . . . . 13 ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))) = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙))))
5756eqeq2i 2621 . . . . . . . . . . . 12 (𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑗))‘𝑘)))) ↔ 𝑧 = (Σ^‘(𝑛 ∈ ℕ ↦ ∏𝑙 ∈ {𝐴} (vol‘(([,) ∘ (𝑖𝑛))‘𝑙)))))
5857biimpi 204 . . . . . . . . . . 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 6088 . . . . . . . . . . . 12 (𝑚 = 𝑛 → (𝑖𝑚) = (𝑖𝑛))
6160fveq1d 6090 . . . . . . . . . . 11 (𝑚 = 𝑛 → ((𝑖𝑚)‘𝐴) = ((𝑖𝑛)‘𝐴))
6261cbvmptv 4672 . . . . . . . . . 10 (𝑚 ∈ ℕ ↦ ((𝑖𝑚)‘𝐴)) = (𝑛 ∈ ℕ ↦ ((𝑖𝑛)‘𝐴))
6332, 33, 34, 47, 59, 62ovnovollem2 39344 . . . . . . . . 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 1255 . . . . . . . 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 3011 . . . . . . 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 200 . . . . . 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 3163 . . . . 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 2653 . . . 4 (𝜑𝑁 = 𝑀)
7170infeq1d 8243 . . 3 (𝜑 → inf(𝑁, ℝ*, < ) = inf(𝑀, ℝ*, < ))
7216, 71eqtrd 2643 . 2 (𝜑 → (vol*‘𝐵) = inf(𝑀, ℝ*, < ))
735, 14, 723eqtr4d 2653 1 (𝜑 → ((voln*‘{𝐴})‘(𝐵𝑚 {𝐴})) = (vol*‘𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 382  w3a 1030   = wceq 1474  wcel 1976  wne 2779  wrex 2896  {crab 2899  Vcvv 3172  wss 3539  c0 3873  ifcif 4035  {csn 4124  cop 4130   cuni 4366   ciun 4449  cmpt 4637   × cxp 5026  ran crn 5029  ccom 5032  cfv 5790  (class class class)co 6527  𝑚 cmap 7721  Xcixp 7771  Fincfn 7818  infcinf 8207  cr 9791  0cc0 9792  *cxr 9929   < clt 9930  cn 10867  [,)cico 12004  cprod 14420  vol*covol 22955  volcvol 22956  Σ^csumge0 39052  voln*covoln 39223
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2033  ax-13 2233  ax-ext 2589  ax-rep 4693  ax-sep 4703  ax-nul 4712  ax-pow 4764  ax-pr 4828  ax-un 6824  ax-inf2 8398  ax-cnex 9848  ax-resscn 9849  ax-1cn 9850  ax-icn 9851  ax-addcl 9852  ax-addrcl 9853  ax-mulcl 9854  ax-mulrcl 9855  ax-mulcom 9856  ax-addass 9857  ax-mulass 9858  ax-distr 9859  ax-i2m1 9860  ax-1ne0 9861  ax-1rid 9862  ax-rnegex 9863  ax-rrecex 9864  ax-cnre 9865  ax-pre-lttri 9866  ax-pre-lttrn 9867  ax-pre-ltadd 9868  ax-pre-mulgt0 9869  ax-pre-sup 9870
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-fal 1480  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-nel 2782  df-ral 2900  df-rex 2901  df-reu 2902  df-rmo 2903  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-int 4405  df-iun 4451  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4939  df-id 4943  df-po 4949  df-so 4950  df-fr 4987  df-se 4988  df-we 4989  df-xp 5034  df-rel 5035  df-cnv 5036  df-co 5037  df-dm 5038  df-rn 5039  df-res 5040  df-ima 5041  df-pred 5583  df-ord 5629  df-on 5630  df-lim 5631  df-suc 5632  df-iota 5754  df-fun 5792  df-fn 5793  df-f 5794  df-f1 5795  df-fo 5796  df-f1o 5797  df-fv 5798  df-isom 5799  df-riota 6489  df-ov 6530  df-oprab 6531  df-mpt2 6532  df-of 6772  df-om 6935  df-1st 7036  df-2nd 7037  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-1o 7424  df-2o 7425  df-oadd 7428  df-er 7606  df-map 7723  df-pm 7724  df-ixp 7772  df-en 7819  df-dom 7820  df-sdom 7821  df-fin 7822  df-fi 8177  df-sup 8208  df-inf 8209  df-oi 8275  df-card 8625  df-cda 8850  df-pnf 9932  df-mnf 9933  df-xr 9934  df-ltxr 9935  df-le 9936  df-sub 10119  df-neg 10120  df-div 10534  df-nn 10868  df-2 10926  df-3 10927  df-n0 11140  df-z 11211  df-uz 11520  df-q 11621  df-rp 11665  df-xneg 11778  df-xadd 11779  df-xmul 11780  df-ioo 12006  df-ico 12008  df-icc 12009  df-fz 12153  df-fzo 12290  df-fl 12410  df-seq 12619  df-exp 12678  df-hash 12935  df-cj 13633  df-re 13634  df-im 13635  df-sqrt 13769  df-abs 13770  df-clim 14013  df-rlim 14014  df-sum 14211  df-prod 14421  df-rest 15852  df-topgen 15873  df-psmet 19505  df-xmet 19506  df-met 19507  df-bl 19508  df-mopn 19509  df-top 20463  df-bases 20464  df-topon 20465  df-cmp 20942  df-ovol 22957  df-vol 22958  df-sumge0 39053  df-ovoln 39224
This theorem is referenced by:  ovnovol  39346
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