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| Mirrors > Home > MPE Home > Th. List > Mathboxes > caragen0 | Structured version Visualization version GIF version | ||
| Description: The empty set belongs to any Caratheodory's construction. First part of Step (b) in the proof of Theorem 113C of [Fremlin1] p. 19. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
| Ref | Expression |
|---|---|
| caragen0.o | ⊢ (𝜑 → 𝑂 ∈ OutMeas) |
| caragen0.s | ⊢ 𝑆 = (CaraGen‘𝑂) |
| Ref | Expression |
|---|---|
| caragen0 | ⊢ (𝜑 → ∅ ∈ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | caragen0.o | . 2 ⊢ (𝜑 → 𝑂 ∈ OutMeas) | |
| 2 | eqid 2737 | . 2 ⊢ ∪ dom 𝑂 = ∪ dom 𝑂 | |
| 3 | caragen0.s | . 2 ⊢ 𝑆 = (CaraGen‘𝑂) | |
| 4 | 0elpw 5305 | . . 3 ⊢ ∅ ∈ 𝒫 ∪ dom 𝑂 | |
| 5 | 4 | a1i 11 | . 2 ⊢ (𝜑 → ∅ ∈ 𝒫 ∪ dom 𝑂) |
| 6 | in0 4349 | . . . . . 6 ⊢ (𝑎 ∩ ∅) = ∅ | |
| 7 | 6 | fveq2i 6847 | . . . . 5 ⊢ (𝑂‘(𝑎 ∩ ∅)) = (𝑂‘∅) |
| 8 | dif0 4332 | . . . . . 6 ⊢ (𝑎 ∖ ∅) = 𝑎 | |
| 9 | 8 | fveq2i 6847 | . . . . 5 ⊢ (𝑂‘(𝑎 ∖ ∅)) = (𝑂‘𝑎) |
| 10 | 7, 9 | oveq12i 7382 | . . . 4 ⊢ ((𝑂‘(𝑎 ∩ ∅)) +𝑒 (𝑂‘(𝑎 ∖ ∅))) = ((𝑂‘∅) +𝑒 (𝑂‘𝑎)) |
| 11 | 10 | a1i 11 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → ((𝑂‘(𝑎 ∩ ∅)) +𝑒 (𝑂‘(𝑎 ∖ ∅))) = ((𝑂‘∅) +𝑒 (𝑂‘𝑎))) |
| 12 | 1 | ome0 46884 | . . . . 5 ⊢ (𝜑 → (𝑂‘∅) = 0) |
| 13 | 12 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → (𝑂‘∅) = 0) |
| 14 | 13 | oveq1d 7385 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → ((𝑂‘∅) +𝑒 (𝑂‘𝑎)) = (0 +𝑒 (𝑂‘𝑎))) |
| 15 | iccssxr 13360 | . . . . 5 ⊢ (0[,]+∞) ⊆ ℝ* | |
| 16 | 1 | adantr 480 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝑂 ∈ OutMeas) |
| 17 | elpwi 4563 | . . . . . . 7 ⊢ (𝑎 ∈ 𝒫 ∪ dom 𝑂 → 𝑎 ⊆ ∪ dom 𝑂) | |
| 18 | 17 | adantl 481 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝑎 ⊆ ∪ dom 𝑂) |
| 19 | 16, 2, 18 | omecl 46890 | . . . . 5 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → (𝑂‘𝑎) ∈ (0[,]+∞)) |
| 20 | 15, 19 | sselid 3933 | . . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → (𝑂‘𝑎) ∈ ℝ*) |
| 21 | 20 | xaddlidd 45709 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → (0 +𝑒 (𝑂‘𝑎)) = (𝑂‘𝑎)) |
| 22 | 11, 14, 21 | 3eqtrd 2776 | . 2 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → ((𝑂‘(𝑎 ∩ ∅)) +𝑒 (𝑂‘(𝑎 ∖ ∅))) = (𝑂‘𝑎)) |
| 23 | 1, 2, 3, 5, 22 | carageneld 46889 | 1 ⊢ (𝜑 → ∅ ∈ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∖ cdif 3900 ∩ cin 3902 ⊆ wss 3903 ∅c0 4287 𝒫 cpw 4556 ∪ cuni 4865 dom cdm 5634 ‘cfv 6502 (class class class)co 7370 0cc0 11040 +∞cpnf 11177 ℝ*cxr 11179 +𝑒 cxad 13038 [,]cicc 13278 OutMeascome 46876 CaraGenccaragen 46878 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 ax-cnex 11096 ax-resscn 11097 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-mulcom 11104 ax-addass 11105 ax-mulass 11106 ax-distr 11107 ax-i2m1 11108 ax-1ne0 11109 ax-1rid 11110 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 ax-pre-lttri 11114 ax-pre-lttrn 11115 ax-pre-ltadd 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-po 5542 df-so 5543 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-ov 7373 df-oprab 7374 df-mpo 7375 df-1st 7945 df-2nd 7946 df-er 8647 df-en 8898 df-dom 8899 df-sdom 8900 df-pnf 11182 df-mnf 11183 df-xr 11184 df-ltxr 11185 df-xadd 13041 df-icc 13282 df-ome 46877 df-caragen 46879 |
| This theorem is referenced by: caragenfiiuncl 46902 caragenunicl 46911 caragensal 46912 caratheodory 46915 |
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