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Theorem ovolfiniun 22989
Description: The Lebesgue outer measure function is finitely sub-additive. Finite sum version. (Contributed by Mario Carneiro, 19-Jun-2014.)
Assertion
Ref Expression
ovolfiniun ((𝐴 ∈ Fin ∧ ∀𝑘𝐴 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)) → (vol*‘ 𝑘𝐴 𝐵) ≤ Σ𝑘𝐴 (vol*‘𝐵))
Distinct variable group:   𝐴,𝑘
Allowed substitution hint:   𝐵(𝑘)

Proof of Theorem ovolfiniun
Dummy variables 𝑚 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 raleq 3110 . . . 4 (𝑥 = ∅ → (∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ ∀𝑘 ∈ ∅ (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)))
2 iuneq1 4460 . . . . . 6 (𝑥 = ∅ → 𝑘𝑥 𝐵 = 𝑘 ∈ ∅ 𝐵)
32fveq2d 6088 . . . . 5 (𝑥 = ∅ → (vol*‘ 𝑘𝑥 𝐵) = (vol*‘ 𝑘 ∈ ∅ 𝐵))
4 sumeq1 14209 . . . . 5 (𝑥 = ∅ → Σ𝑘𝑥 (vol*‘𝐵) = Σ𝑘 ∈ ∅ (vol*‘𝐵))
53, 4breq12d 4586 . . . 4 (𝑥 = ∅ → ((vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵) ↔ (vol*‘ 𝑘 ∈ ∅ 𝐵) ≤ Σ𝑘 ∈ ∅ (vol*‘𝐵)))
61, 5imbi12d 332 . . 3 (𝑥 = ∅ → ((∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵)) ↔ (∀𝑘 ∈ ∅ (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘 ∈ ∅ 𝐵) ≤ Σ𝑘 ∈ ∅ (vol*‘𝐵))))
7 raleq 3110 . . . 4 (𝑥 = 𝑦 → (∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ ∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)))
8 iuneq1 4460 . . . . . 6 (𝑥 = 𝑦 𝑘𝑥 𝐵 = 𝑘𝑦 𝐵)
98fveq2d 6088 . . . . 5 (𝑥 = 𝑦 → (vol*‘ 𝑘𝑥 𝐵) = (vol*‘ 𝑘𝑦 𝐵))
10 sumeq1 14209 . . . . 5 (𝑥 = 𝑦 → Σ𝑘𝑥 (vol*‘𝐵) = Σ𝑘𝑦 (vol*‘𝐵))
119, 10breq12d 4586 . . . 4 (𝑥 = 𝑦 → ((vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵) ↔ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵)))
127, 11imbi12d 332 . . 3 (𝑥 = 𝑦 → ((∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵)) ↔ (∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))))
13 raleq 3110 . . . 4 (𝑥 = (𝑦 ∪ {𝑧}) → (∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ ∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)))
14 iuneq1 4460 . . . . . 6 (𝑥 = (𝑦 ∪ {𝑧}) → 𝑘𝑥 𝐵 = 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵)
1514fveq2d 6088 . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → (vol*‘ 𝑘𝑥 𝐵) = (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵))
16 sumeq1 14209 . . . . 5 (𝑥 = (𝑦 ∪ {𝑧}) → Σ𝑘𝑥 (vol*‘𝐵) = Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))
1715, 16breq12d 4586 . . . 4 (𝑥 = (𝑦 ∪ {𝑧}) → ((vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵) ↔ (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵)))
1813, 17imbi12d 332 . . 3 (𝑥 = (𝑦 ∪ {𝑧}) → ((∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵)) ↔ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))))
19 raleq 3110 . . . 4 (𝑥 = 𝐴 → (∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ ∀𝑘𝐴 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)))
20 iuneq1 4460 . . . . . 6 (𝑥 = 𝐴 𝑘𝑥 𝐵 = 𝑘𝐴 𝐵)
2120fveq2d 6088 . . . . 5 (𝑥 = 𝐴 → (vol*‘ 𝑘𝑥 𝐵) = (vol*‘ 𝑘𝐴 𝐵))
22 sumeq1 14209 . . . . 5 (𝑥 = 𝐴 → Σ𝑘𝑥 (vol*‘𝐵) = Σ𝑘𝐴 (vol*‘𝐵))
2321, 22breq12d 4586 . . . 4 (𝑥 = 𝐴 → ((vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵) ↔ (vol*‘ 𝑘𝐴 𝐵) ≤ Σ𝑘𝐴 (vol*‘𝐵)))
2419, 23imbi12d 332 . . 3 (𝑥 = 𝐴 → ((∀𝑘𝑥 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑥 𝐵) ≤ Σ𝑘𝑥 (vol*‘𝐵)) ↔ (∀𝑘𝐴 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝐴 𝐵) ≤ Σ𝑘𝐴 (vol*‘𝐵))))
25 0le0 10953 . . . . 5 0 ≤ 0
26 0iun 4503 . . . . . . 7 𝑘 ∈ ∅ 𝐵 = ∅
2726fveq2i 6087 . . . . . 6 (vol*‘ 𝑘 ∈ ∅ 𝐵) = (vol*‘∅)
28 ovol0 22981 . . . . . 6 (vol*‘∅) = 0
2927, 28eqtri 2627 . . . . 5 (vol*‘ 𝑘 ∈ ∅ 𝐵) = 0
30 sum0 14241 . . . . 5 Σ𝑘 ∈ ∅ (vol*‘𝐵) = 0
3125, 29, 303brtr4i 4603 . . . 4 (vol*‘ 𝑘 ∈ ∅ 𝐵) ≤ Σ𝑘 ∈ ∅ (vol*‘𝐵)
3231a1i 11 . . 3 (∀𝑘 ∈ ∅ (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘 ∈ ∅ 𝐵) ≤ Σ𝑘 ∈ ∅ (vol*‘𝐵))
33 ssun1 3733 . . . . . 6 𝑦 ⊆ (𝑦 ∪ {𝑧})
34 ssralv 3624 . . . . . 6 (𝑦 ⊆ (𝑦 ∪ {𝑧}) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → ∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)))
3533, 34ax-mp 5 . . . . 5 (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → ∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ))
3635imim1i 60 . . . 4 ((∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵)) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵)))
37 simprl 789 . . . . . . . . . . . . 13 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ))
38 nfcsb1v 3510 . . . . . . . . . . . . . . . 16 𝑘𝑚 / 𝑘𝐵
39 nfcv 2746 . . . . . . . . . . . . . . . 16 𝑘
4038, 39nfss 3556 . . . . . . . . . . . . . . 15 𝑘𝑚 / 𝑘𝐵 ⊆ ℝ
41 nfcv 2746 . . . . . . . . . . . . . . . . 17 𝑘vol*
4241, 38nffv 6091 . . . . . . . . . . . . . . . 16 𝑘(vol*‘𝑚 / 𝑘𝐵)
4342nfel1 2760 . . . . . . . . . . . . . . 15 𝑘(vol*‘𝑚 / 𝑘𝐵) ∈ ℝ
4440, 43nfan 1814 . . . . . . . . . . . . . 14 𝑘(𝑚 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)
45 csbeq1a 3503 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑚𝐵 = 𝑚 / 𝑘𝐵)
4645sseq1d 3590 . . . . . . . . . . . . . . 15 (𝑘 = 𝑚 → (𝐵 ⊆ ℝ ↔ 𝑚 / 𝑘𝐵 ⊆ ℝ))
4745fveq2d 6088 . . . . . . . . . . . . . . . 16 (𝑘 = 𝑚 → (vol*‘𝐵) = (vol*‘𝑚 / 𝑘𝐵))
4847eleq1d 2667 . . . . . . . . . . . . . . 15 (𝑘 = 𝑚 → ((vol*‘𝐵) ∈ ℝ ↔ (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ))
4946, 48anbi12d 742 . . . . . . . . . . . . . 14 (𝑘 = 𝑚 → ((𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ (𝑚 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)))
5044, 49rspc 3271 . . . . . . . . . . . . 13 (𝑚 ∈ (𝑦 ∪ {𝑧}) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (𝑚 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)))
5137, 50mpan9 484 . . . . . . . . . . . 12 ((((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) ∧ 𝑚 ∈ (𝑦 ∪ {𝑧})) → (𝑚 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ))
5251simpld 473 . . . . . . . . . . 11 ((((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) ∧ 𝑚 ∈ (𝑦 ∪ {𝑧})) → 𝑚 / 𝑘𝐵 ⊆ ℝ)
5352ralrimiva 2944 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ∀𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 ⊆ ℝ)
54 iunss 4487 . . . . . . . . . 10 ( 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 ⊆ ℝ ↔ ∀𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 ⊆ ℝ)
5553, 54sylibr 222 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 ⊆ ℝ)
56 iunss1 4458 . . . . . . . . . . . . 13 (𝑦 ⊆ (𝑦 ∪ {𝑧}) → 𝑚𝑦 𝑚 / 𝑘𝐵 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵)
5733, 56ax-mp 5 . . . . . . . . . . . 12 𝑚𝑦 𝑚 / 𝑘𝐵 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵
5857, 55syl5ss 3574 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → 𝑚𝑦 𝑚 / 𝑘𝐵 ⊆ ℝ)
59 simpll 785 . . . . . . . . . . . 12 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → 𝑦 ∈ Fin)
60 elun1 3737 . . . . . . . . . . . . 13 (𝑚𝑦𝑚 ∈ (𝑦 ∪ {𝑧}))
6151simprd 477 . . . . . . . . . . . . 13 ((((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) ∧ 𝑚 ∈ (𝑦 ∪ {𝑧})) → (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)
6260, 61sylan2 489 . . . . . . . . . . . 12 ((((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) ∧ 𝑚𝑦) → (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)
6359, 62fsumrecl 14254 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)
64 simprr 791 . . . . . . . . . . . 12 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))
65 nfcv 2746 . . . . . . . . . . . . . 14 𝑚𝐵
6665, 38, 45cbviun 4483 . . . . . . . . . . . . 13 𝑘𝑦 𝐵 = 𝑚𝑦 𝑚 / 𝑘𝐵
6766fveq2i 6087 . . . . . . . . . . . 12 (vol*‘ 𝑘𝑦 𝐵) = (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵)
68 nfcv 2746 . . . . . . . . . . . . 13 𝑚(vol*‘𝐵)
6968, 42, 47cbvsumi 14217 . . . . . . . . . . . 12 Σ𝑘𝑦 (vol*‘𝐵) = Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵)
7064, 67, 693brtr3g 4606 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) ≤ Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵))
71 ovollecl 22971 . . . . . . . . . . 11 (( 𝑚𝑦 𝑚 / 𝑘𝐵 ⊆ ℝ ∧ Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) ∈ ℝ ∧ (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) ≤ Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵)) → (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) ∈ ℝ)
7258, 63, 70, 71syl3anc 1317 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) ∈ ℝ)
73 ssun2 3734 . . . . . . . . . . . . 13 {𝑧} ⊆ (𝑦 ∪ {𝑧})
74 vsnid 4151 . . . . . . . . . . . . 13 𝑧 ∈ {𝑧}
7573, 74sselii 3560 . . . . . . . . . . . 12 𝑧 ∈ (𝑦 ∪ {𝑧})
76 nfcsb1v 3510 . . . . . . . . . . . . . . 15 𝑘𝑧 / 𝑘𝐵
7776, 39nfss 3556 . . . . . . . . . . . . . 14 𝑘𝑧 / 𝑘𝐵 ⊆ ℝ
7841, 76nffv 6091 . . . . . . . . . . . . . . 15 𝑘(vol*‘𝑧 / 𝑘𝐵)
7978nfel1 2760 . . . . . . . . . . . . . 14 𝑘(vol*‘𝑧 / 𝑘𝐵) ∈ ℝ
8077, 79nfan 1814 . . . . . . . . . . . . 13 𝑘(𝑧 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ)
81 csbeq1a 3503 . . . . . . . . . . . . . . 15 (𝑘 = 𝑧𝐵 = 𝑧 / 𝑘𝐵)
8281sseq1d 3590 . . . . . . . . . . . . . 14 (𝑘 = 𝑧 → (𝐵 ⊆ ℝ ↔ 𝑧 / 𝑘𝐵 ⊆ ℝ))
8381fveq2d 6088 . . . . . . . . . . . . . . 15 (𝑘 = 𝑧 → (vol*‘𝐵) = (vol*‘𝑧 / 𝑘𝐵))
8483eleq1d 2667 . . . . . . . . . . . . . 14 (𝑘 = 𝑧 → ((vol*‘𝐵) ∈ ℝ ↔ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ))
8582, 84anbi12d 742 . . . . . . . . . . . . 13 (𝑘 = 𝑧 → ((𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ↔ (𝑧 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ)))
8680, 85rspc 3271 . . . . . . . . . . . 12 (𝑧 ∈ (𝑦 ∪ {𝑧}) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (𝑧 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ)))
8775, 37, 86mpsyl 65 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (𝑧 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ))
8887simprd 477 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ)
8972, 88readdcld 9921 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)) ∈ ℝ)
90 iunxun 4531 . . . . . . . . . . . 12 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 = ( 𝑚𝑦 𝑚 / 𝑘𝐵 𝑚 ∈ {𝑧}𝑚 / 𝑘𝐵)
91 vex 3171 . . . . . . . . . . . . . 14 𝑧 ∈ V
92 csbeq1 3497 . . . . . . . . . . . . . 14 (𝑚 = 𝑧𝑚 / 𝑘𝐵 = 𝑧 / 𝑘𝐵)
9391, 92iunxsn 4529 . . . . . . . . . . . . 13 𝑚 ∈ {𝑧}𝑚 / 𝑘𝐵 = 𝑧 / 𝑘𝐵
9493uneq2i 3721 . . . . . . . . . . . 12 ( 𝑚𝑦 𝑚 / 𝑘𝐵 𝑚 ∈ {𝑧}𝑚 / 𝑘𝐵) = ( 𝑚𝑦 𝑚 / 𝑘𝐵𝑧 / 𝑘𝐵)
9590, 94eqtri 2627 . . . . . . . . . . 11 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 = ( 𝑚𝑦 𝑚 / 𝑘𝐵𝑧 / 𝑘𝐵)
9695fveq2i 6087 . . . . . . . . . 10 (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) = (vol*‘( 𝑚𝑦 𝑚 / 𝑘𝐵𝑧 / 𝑘𝐵))
97 ovolun 22987 . . . . . . . . . . 11 ((( 𝑚𝑦 𝑚 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) ∈ ℝ) ∧ (𝑧 / 𝑘𝐵 ⊆ ℝ ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℝ)) → (vol*‘( 𝑚𝑦 𝑚 / 𝑘𝐵𝑧 / 𝑘𝐵)) ≤ ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
9858, 72, 87, 97syl21anc 1316 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘( 𝑚𝑦 𝑚 / 𝑘𝐵𝑧 / 𝑘𝐵)) ≤ ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
9996, 98syl5eqbr 4608 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) ≤ ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
100 ovollecl 22971 . . . . . . . . 9 (( 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵 ⊆ ℝ ∧ ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)) ∈ ℝ ∧ (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) ≤ ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵))) → (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) ∈ ℝ)
10155, 89, 99, 100syl3anc 1317 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) ∈ ℝ)
102 snfi 7896 . . . . . . . . . . 11 {𝑧} ∈ Fin
103 unfi 8085 . . . . . . . . . . 11 ((𝑦 ∈ Fin ∧ {𝑧} ∈ Fin) → (𝑦 ∪ {𝑧}) ∈ Fin)
104102, 103mpan2 702 . . . . . . . . . 10 (𝑦 ∈ Fin → (𝑦 ∪ {𝑧}) ∈ Fin)
105104ad2antrr 757 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (𝑦 ∪ {𝑧}) ∈ Fin)
106105, 61fsumrecl 14254 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵) ∈ ℝ)
10772, 63, 88, 70leadd1dd 10486 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)) ≤ (Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
108 simplr 787 . . . . . . . . . . . 12 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ¬ 𝑧𝑦)
109 disjsn 4187 . . . . . . . . . . . 12 ((𝑦 ∩ {𝑧}) = ∅ ↔ ¬ 𝑧𝑦)
110108, 109sylibr 222 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (𝑦 ∩ {𝑧}) = ∅)
111 eqidd 2606 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (𝑦 ∪ {𝑧}) = (𝑦 ∪ {𝑧}))
11261recnd 9920 . . . . . . . . . . 11 ((((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) ∧ 𝑚 ∈ (𝑦 ∪ {𝑧})) → (vol*‘𝑚 / 𝑘𝐵) ∈ ℂ)
113110, 111, 105, 112fsumsplit 14260 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵) = (Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) + Σ𝑚 ∈ {𝑧} (vol*‘𝑚 / 𝑘𝐵)))
11488recnd 9920 . . . . . . . . . . . 12 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘𝑧 / 𝑘𝐵) ∈ ℂ)
11592fveq2d 6088 . . . . . . . . . . . . 13 (𝑚 = 𝑧 → (vol*‘𝑚 / 𝑘𝐵) = (vol*‘𝑧 / 𝑘𝐵))
116115sumsn 14261 . . . . . . . . . . . 12 ((𝑧 ∈ V ∧ (vol*‘𝑧 / 𝑘𝐵) ∈ ℂ) → Σ𝑚 ∈ {𝑧} (vol*‘𝑚 / 𝑘𝐵) = (vol*‘𝑧 / 𝑘𝐵))
11791, 114, 116sylancr 693 . . . . . . . . . . 11 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → Σ𝑚 ∈ {𝑧} (vol*‘𝑚 / 𝑘𝐵) = (vol*‘𝑧 / 𝑘𝐵))
118117oveq2d 6539 . . . . . . . . . 10 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) + Σ𝑚 ∈ {𝑧} (vol*‘𝑚 / 𝑘𝐵)) = (Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
119113, 118eqtrd 2639 . . . . . . . . 9 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵) = (Σ𝑚𝑦 (vol*‘𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)))
120107, 119breqtrrd 4601 . . . . . . . 8 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → ((vol*‘ 𝑚𝑦 𝑚 / 𝑘𝐵) + (vol*‘𝑧 / 𝑘𝐵)) ≤ Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵))
121101, 89, 106, 99, 120letrd 10041 . . . . . . 7 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵) ≤ Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵))
12265, 38, 45cbviun 4483 . . . . . . . 8 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵 = 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵
123122fveq2i 6087 . . . . . . 7 (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) = (vol*‘ 𝑚 ∈ (𝑦 ∪ {𝑧})𝑚 / 𝑘𝐵)
12468, 42, 47cbvsumi 14217 . . . . . . 7 Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵) = Σ𝑚 ∈ (𝑦 ∪ {𝑧})(vol*‘𝑚 / 𝑘𝐵)
125121, 123, 1243brtr4g 4607 . . . . . 6 (((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) ∧ (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) ∧ (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵))) → (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))
126125exp32 628 . . . . 5 ((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → ((vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵) → (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))))
127126a2d 29 . . . 4 ((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) → ((∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵)) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))))
12836, 127syl5 33 . . 3 ((𝑦 ∈ Fin ∧ ¬ 𝑧𝑦) → ((∀𝑘𝑦 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝑦 𝐵) ≤ Σ𝑘𝑦 (vol*‘𝐵)) → (∀𝑘 ∈ (𝑦 ∪ {𝑧})(𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘 ∈ (𝑦 ∪ {𝑧})𝐵) ≤ Σ𝑘 ∈ (𝑦 ∪ {𝑧})(vol*‘𝐵))))
1296, 12, 18, 24, 32, 128findcard2s 8059 . 2 (𝐴 ∈ Fin → (∀𝑘𝐴 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ) → (vol*‘ 𝑘𝐴 𝐵) ≤ Σ𝑘𝐴 (vol*‘𝐵)))
130129imp 443 1 ((𝐴 ∈ Fin ∧ ∀𝑘𝐴 (𝐵 ⊆ ℝ ∧ (vol*‘𝐵) ∈ ℝ)) → (vol*‘ 𝑘𝐴 𝐵) ≤ Σ𝑘𝐴 (vol*‘𝐵))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 382   = wceq 1474  wcel 1975  wral 2891  Vcvv 3168  csb 3494  cun 3533  cin 3534  wss 3535  c0 3869  {csn 4120   ciun 4445   class class class wbr 4573  cfv 5786  (class class class)co 6523  Fincfn 7814  cc 9786  cr 9787  0cc0 9788   + caddc 9791  cle 9927  Σcsu 14206  vol*covol 22951
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1711  ax-4 1726  ax-5 1825  ax-6 1873  ax-7 1920  ax-8 1977  ax-9 1984  ax-10 2004  ax-11 2019  ax-12 2031  ax-13 2228  ax-ext 2585  ax-rep 4689  ax-sep 4699  ax-nul 4708  ax-pow 4760  ax-pr 4824  ax-un 6820  ax-inf2 8394  ax-cnex 9844  ax-resscn 9845  ax-1cn 9846  ax-icn 9847  ax-addcl 9848  ax-addrcl 9849  ax-mulcl 9850  ax-mulrcl 9851  ax-mulcom 9852  ax-addass 9853  ax-mulass 9854  ax-distr 9855  ax-i2m1 9856  ax-1ne0 9857  ax-1rid 9858  ax-rnegex 9859  ax-rrecex 9860  ax-cnre 9861  ax-pre-lttri 9862  ax-pre-lttrn 9863  ax-pre-ltadd 9864  ax-pre-mulgt0 9865  ax-pre-sup 9866
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 1866  df-eu 2457  df-mo 2458  df-clab 2592  df-cleq 2598  df-clel 2601  df-nfc 2735  df-ne 2777  df-nel 2778  df-ral 2896  df-rex 2897  df-reu 2898  df-rmo 2899  df-rab 2900  df-v 3170  df-sbc 3398  df-csb 3495  df-dif 3538  df-un 3540  df-in 3542  df-ss 3549  df-pss 3551  df-nul 3870  df-if 4032  df-pw 4105  df-sn 4121  df-pr 4123  df-tp 4125  df-op 4127  df-uni 4363  df-int 4401  df-iun 4447  df-br 4574  df-opab 4634  df-mpt 4635  df-tr 4671  df-eprel 4935  df-id 4939  df-po 4945  df-so 4946  df-fr 4983  df-se 4984  df-we 4985  df-xp 5030  df-rel 5031  df-cnv 5032  df-co 5033  df-dm 5034  df-rn 5035  df-res 5036  df-ima 5037  df-pred 5579  df-ord 5625  df-on 5626  df-lim 5627  df-suc 5628  df-iota 5750  df-fun 5788  df-fn 5789  df-f 5790  df-f1 5791  df-fo 5792  df-f1o 5793  df-fv 5794  df-isom 5795  df-riota 6485  df-ov 6526  df-oprab 6527  df-mpt2 6528  df-of 6768  df-om 6931  df-1st 7032  df-2nd 7033  df-wrecs 7267  df-recs 7328  df-rdg 7366  df-1o 7420  df-2o 7421  df-oadd 7424  df-er 7602  df-map 7719  df-en 7815  df-dom 7816  df-sdom 7817  df-fin 7818  df-sup 8204  df-inf 8205  df-oi 8271  df-card 8621  df-cda 8846  df-pnf 9928  df-mnf 9929  df-xr 9930  df-ltxr 9931  df-le 9932  df-sub 10115  df-neg 10116  df-div 10530  df-nn 10864  df-2 10922  df-3 10923  df-n0 11136  df-z 11207  df-uz 11516  df-q 11617  df-rp 11661  df-xadd 11775  df-ioo 12002  df-ico 12004  df-icc 12005  df-fz 12149  df-fzo 12286  df-fl 12406  df-seq 12615  df-exp 12674  df-hash 12931  df-cj 13629  df-re 13630  df-im 13631  df-sqrt 13765  df-abs 13766  df-clim 14009  df-sum 14207  df-xmet 19502  df-met 19503  df-ovol 22953
This theorem is referenced by:  volfiniun  23035  uniioombllem3a  23071  uniioombllem4  23073  i1fd  23167  i1fadd  23181  i1fmul  23182  volsupnfl  32423
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