Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > ovnssle | Structured version Visualization version GIF version |
Description: The (multidimensional) Lebesgue outer measure of a subset is less than the L.o.m. of the whole set. This is step (iii) of the proof of Proposition 115D (a) of [Fremlin1] p. 30. (Contributed by Glauco Siliprandi, 11-Oct-2020.) |
Ref | Expression |
---|---|
ovnssle.1 | ⊢ (𝜑 → 𝑋 ∈ Fin) |
ovnssle.2 | ⊢ (𝜑 → 𝐴 ⊆ 𝐵) |
ovnssle.3 | ⊢ (𝜑 → 𝐵 ⊆ (ℝ ↑𝑚 𝑋)) |
Ref | Expression |
---|---|
ovnssle | ⊢ (𝜑 → ((voln*‘𝑋)‘𝐴) ≤ ((voln*‘𝑋)‘𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0le0 10987 | . . . 4 ⊢ 0 ≤ 0 | |
2 | 1 | a1i 11 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 0 ≤ 0) |
3 | fveq2 6103 | . . . . . . 7 ⊢ (𝑋 = ∅ → (voln*‘𝑋) = (voln*‘∅)) | |
4 | 3 | fveq1d 6105 | . . . . . 6 ⊢ (𝑋 = ∅ → ((voln*‘𝑋)‘𝐴) = ((voln*‘∅)‘𝐴)) |
5 | 4 | adantl 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐴) = ((voln*‘∅)‘𝐴)) |
6 | ovnssle.2 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ⊆ 𝐵) | |
7 | 6 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 𝐴 ⊆ 𝐵) |
8 | ovnssle.3 | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ⊆ (ℝ ↑𝑚 𝑋)) | |
9 | 8 | adantr 480 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 𝐵 ⊆ (ℝ ↑𝑚 𝑋)) |
10 | simpr 476 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 𝑋 = ∅) | |
11 | 10 | oveq2d 6565 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑋 = ∅) → (ℝ ↑𝑚 𝑋) = (ℝ ↑𝑚 ∅)) |
12 | 9, 11 | sseqtrd 3604 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 𝐵 ⊆ (ℝ ↑𝑚 ∅)) |
13 | 7, 12 | sstrd 3578 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑋 = ∅) → 𝐴 ⊆ (ℝ ↑𝑚 ∅)) |
14 | 13 | ovn0val 39440 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘∅)‘𝐴) = 0) |
15 | 5, 14 | eqtrd 2644 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐴) = 0) |
16 | 3 | fveq1d 6105 | . . . . . 6 ⊢ (𝑋 = ∅ → ((voln*‘𝑋)‘𝐵) = ((voln*‘∅)‘𝐵)) |
17 | 16 | adantl 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐵) = ((voln*‘∅)‘𝐵)) |
18 | 12 | ovn0val 39440 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘∅)‘𝐵) = 0) |
19 | 17, 18 | eqtrd 2644 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐵) = 0) |
20 | 15, 19 | breq12d 4596 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = ∅) → (((voln*‘𝑋)‘𝐴) ≤ ((voln*‘𝑋)‘𝐵) ↔ 0 ≤ 0)) |
21 | 2, 20 | mpbird 246 | . 2 ⊢ ((𝜑 ∧ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐴) ≤ ((voln*‘𝑋)‘𝐵)) |
22 | ovnssle.1 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ Fin) | |
23 | 22 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → 𝑋 ∈ Fin) |
24 | neqne 2790 | . . . 4 ⊢ (¬ 𝑋 = ∅ → 𝑋 ≠ ∅) | |
25 | 24 | adantl 481 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → 𝑋 ≠ ∅) |
26 | 6 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → 𝐴 ⊆ 𝐵) |
27 | 8 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → 𝐵 ⊆ (ℝ ↑𝑚 𝑋)) |
28 | eqid 2610 | . . 3 ⊢ {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 𝑋) ↑𝑚 ℕ)(𝐴 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑖‘𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ (𝑖‘𝑗))‘𝑘)))))} = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 𝑋) ↑𝑚 ℕ)(𝐴 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑖‘𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ (𝑖‘𝑗))‘𝑘)))))} | |
29 | eqid 2610 | . . 3 ⊢ {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 𝑋) ↑𝑚 ℕ)(𝐵 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑖‘𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ (𝑖‘𝑗))‘𝑘)))))} = {𝑧 ∈ ℝ* ∣ ∃𝑖 ∈ (((ℝ × ℝ) ↑𝑚 𝑋) ↑𝑚 ℕ)(𝐵 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑖‘𝑗))‘𝑘) ∧ 𝑧 = (Σ^‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ (𝑖‘𝑗))‘𝑘)))))} | |
30 | 23, 25, 26, 27, 28, 29 | ovnsslelem 39450 | . 2 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → ((voln*‘𝑋)‘𝐴) ≤ ((voln*‘𝑋)‘𝐵)) |
31 | 21, 30 | pm2.61dan 828 | 1 ⊢ (𝜑 → ((voln*‘𝑋)‘𝐴) ≤ ((voln*‘𝑋)‘𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ≠ wne 2780 ∃wrex 2897 {crab 2900 ⊆ wss 3540 ∅c0 3874 ∪ ciun 4455 class class class wbr 4583 ↦ cmpt 4643 × cxp 5036 ∘ ccom 5042 ‘cfv 5804 (class class class)co 6549 ↑𝑚 cmap 7744 Xcixp 7794 Fincfn 7841 ℝcr 9814 0cc0 9815 ℝ*cxr 9952 ≤ cle 9954 ℕcn 10897 [,)cico 12048 ∏cprod 14474 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-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-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-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-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-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-ixp 7795 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-seq 12664 df-prod 14475 df-ovoln 39427 |
This theorem is referenced by: ovnome 39463 hspmbllem3 39518 |
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