![]() |
Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > Mathboxes > truae | Structured version Visualization version GIF version |
Description: A truth holds almost everywhere. (Contributed by Thierry Arnoux, 20-Oct-2017.) |
Ref | Expression |
---|---|
truae.1 | ⊢ ∪ dom 𝑀 = 𝑂 |
truae.2 | ⊢ (𝜑 → 𝑀 ∈ ∪ ran measures) |
truae.3 | ⊢ (𝜑 → 𝜓) |
Ref | Expression |
---|---|
truae | ⊢ (𝜑 → {𝑥 ∈ 𝑂 ∣ 𝜓}a.e.𝑀) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | truae.3 | . . . . . . . 8 ⊢ (𝜑 → 𝜓) | |
2 | 1 | pm2.24d 148 | . . . . . . 7 ⊢ (𝜑 → (¬ 𝜓 → 𝑥 ∈ ∅)) |
3 | 2 | ralrimivw 3116 | . . . . . 6 ⊢ (𝜑 → ∀𝑥 ∈ 𝑂 (¬ 𝜓 → 𝑥 ∈ ∅)) |
4 | rabss 3828 | . . . . . 6 ⊢ ({𝑥 ∈ 𝑂 ∣ ¬ 𝜓} ⊆ ∅ ↔ ∀𝑥 ∈ 𝑂 (¬ 𝜓 → 𝑥 ∈ ∅)) | |
5 | 3, 4 | sylibr 224 | . . . . 5 ⊢ (𝜑 → {𝑥 ∈ 𝑂 ∣ ¬ 𝜓} ⊆ ∅) |
6 | ss0 4118 | . . . . 5 ⊢ ({𝑥 ∈ 𝑂 ∣ ¬ 𝜓} ⊆ ∅ → {𝑥 ∈ 𝑂 ∣ ¬ 𝜓} = ∅) | |
7 | 5, 6 | syl 17 | . . . 4 ⊢ (𝜑 → {𝑥 ∈ 𝑂 ∣ ¬ 𝜓} = ∅) |
8 | 7 | fveq2d 6336 | . . 3 ⊢ (𝜑 → (𝑀‘{𝑥 ∈ 𝑂 ∣ ¬ 𝜓}) = (𝑀‘∅)) |
9 | truae.2 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ ∪ ran measures) | |
10 | measbasedom 30605 | . . . . 5 ⊢ (𝑀 ∈ ∪ ran measures ↔ 𝑀 ∈ (measures‘dom 𝑀)) | |
11 | measvnul 30609 | . . . . 5 ⊢ (𝑀 ∈ (measures‘dom 𝑀) → (𝑀‘∅) = 0) | |
12 | 10, 11 | sylbi 207 | . . . 4 ⊢ (𝑀 ∈ ∪ ran measures → (𝑀‘∅) = 0) |
13 | 9, 12 | syl 17 | . . 3 ⊢ (𝜑 → (𝑀‘∅) = 0) |
14 | 8, 13 | eqtrd 2805 | . 2 ⊢ (𝜑 → (𝑀‘{𝑥 ∈ 𝑂 ∣ ¬ 𝜓}) = 0) |
15 | truae.1 | . . . 4 ⊢ ∪ dom 𝑀 = 𝑂 | |
16 | 15 | braew 30645 | . . 3 ⊢ (𝑀 ∈ ∪ ran measures → ({𝑥 ∈ 𝑂 ∣ 𝜓}a.e.𝑀 ↔ (𝑀‘{𝑥 ∈ 𝑂 ∣ ¬ 𝜓}) = 0)) |
17 | 9, 16 | syl 17 | . 2 ⊢ (𝜑 → ({𝑥 ∈ 𝑂 ∣ 𝜓}a.e.𝑀 ↔ (𝑀‘{𝑥 ∈ 𝑂 ∣ ¬ 𝜓}) = 0)) |
18 | 14, 17 | mpbird 247 | 1 ⊢ (𝜑 → {𝑥 ∈ 𝑂 ∣ 𝜓}a.e.𝑀) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 196 = wceq 1631 ∈ wcel 2145 ∀wral 3061 {crab 3065 ⊆ wss 3723 ∅c0 4063 ∪ cuni 4574 class class class wbr 4786 dom cdm 5249 ran crn 5250 ‘cfv 6031 0cc0 10138 measurescmeas 30598 a.e.cae 30640 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1870 ax-4 1885 ax-5 1991 ax-6 2057 ax-7 2093 ax-8 2147 ax-9 2154 ax-10 2174 ax-11 2190 ax-12 2203 ax-13 2408 ax-ext 2751 ax-sep 4915 ax-nul 4923 ax-pow 4974 ax-pr 5034 ax-un 7096 |
This theorem depends on definitions: df-bi 197 df-an 383 df-or 837 df-3an 1073 df-tru 1634 df-fal 1637 df-ex 1853 df-nf 1858 df-sb 2050 df-eu 2622 df-mo 2623 df-clab 2758 df-cleq 2764 df-clel 2767 df-nfc 2902 df-ne 2944 df-ral 3066 df-rex 3067 df-rab 3070 df-v 3353 df-sbc 3588 df-csb 3683 df-dif 3726 df-un 3728 df-in 3730 df-ss 3737 df-nul 4064 df-if 4226 df-pw 4299 df-sn 4317 df-pr 4319 df-op 4323 df-uni 4575 df-br 4787 df-opab 4847 df-mpt 4864 df-id 5157 df-xp 5255 df-rel 5256 df-cnv 5257 df-co 5258 df-dm 5259 df-rn 5260 df-res 5261 df-ima 5262 df-iota 5994 df-fun 6033 df-fn 6034 df-f 6035 df-fv 6039 df-ov 6796 df-esum 30430 df-meas 30599 df-ae 30642 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |