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| Mirrors > Home > MPE Home > Th. List > Mathboxes > difelcarsg2 | Structured version Visualization version GIF version | ||
| Description: The Caratheodory-measurable sets are closed under class difference. (Contributed by Thierry Arnoux, 30-May-2020.) |
| Ref | Expression |
|---|---|
| carsgval.1 | ⊢ (𝜑 → 𝑂 ∈ 𝑉) |
| carsgval.2 | ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞)) |
| difelcarsg.1 | ⊢ (𝜑 → 𝐴 ∈ (toCaraSiga‘𝑀)) |
| inelcarsg.1 | ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 𝑂 ∧ 𝑏 ∈ 𝒫 𝑂) → (𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +𝑒 (𝑀‘𝑏))) |
| inelcarsg.2 | ⊢ (𝜑 → 𝐵 ∈ (toCaraSiga‘𝑀)) |
| Ref | Expression |
|---|---|
| difelcarsg2 | ⊢ (𝜑 → (𝐴 ∖ 𝐵) ∈ (toCaraSiga‘𝑀)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | carsgval.1 | . . . 4 ⊢ (𝜑 → 𝑂 ∈ 𝑉) | |
| 2 | carsgval.2 | . . . 4 ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞)) | |
| 3 | difelcarsg.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ (toCaraSiga‘𝑀)) | |
| 4 | 1, 2, 3 | elcarsgss 34503 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ 𝑂) |
| 5 | difin2 4231 | . . 3 ⊢ (𝐴 ⊆ 𝑂 → (𝐴 ∖ 𝐵) = ((𝑂 ∖ 𝐵) ∩ 𝐴)) | |
| 6 | 4, 5 | syl 17 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐵) = ((𝑂 ∖ 𝐵) ∩ 𝐴)) |
| 7 | inelcarsg.2 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ (toCaraSiga‘𝑀)) | |
| 8 | 1, 2, 7 | difelcarsg 34504 | . . 3 ⊢ (𝜑 → (𝑂 ∖ 𝐵) ∈ (toCaraSiga‘𝑀)) |
| 9 | inelcarsg.1 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 𝑂 ∧ 𝑏 ∈ 𝒫 𝑂) → (𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +𝑒 (𝑀‘𝑏))) | |
| 10 | 1, 2, 8, 9, 3 | inelcarsg 34505 | . 2 ⊢ (𝜑 → ((𝑂 ∖ 𝐵) ∩ 𝐴) ∈ (toCaraSiga‘𝑀)) |
| 11 | 6, 10 | eqeltrd 2841 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐵) ∈ (toCaraSiga‘𝑀)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 ∖ cdif 3881 ∪ cun 3882 ∩ cin 3883 ⊆ wss 3884 𝒫 cpw 4531 class class class wbr 5074 ⟶wf 6484 ‘cfv 6488 (class class class)co 7359 0cc0 11034 +∞cpnf 11172 ≤ cle 11176 +𝑒 cxad 13056 [,]cicc 13296 toCaraSigaccarsg 34495 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-cnex 11090 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-po 5528 df-so 5529 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-ov 7362 df-oprab 7363 df-mpo 7364 df-1st 7933 df-2nd 7934 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-xadd 13059 df-icc 13300 df-carsg 34496 |
| This theorem is referenced by: carsgclctunlem3 34514 |
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