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| Mirrors > Home > MPE Home > Th. List > Mathboxes > smfdmss | Structured version Visualization version GIF version | ||
| Description: The domain of a function measurable w.r.t. to a sigma-algebra, is a subset of the set underlying the sigma-algebra. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| smfdmss.s | ⊢ (𝜑 → 𝑆 ∈ SAlg) |
| smfdmss.f | ⊢ (𝜑 → 𝐹 ∈ (SMblFn‘𝑆)) |
| smfdmss.d | ⊢ 𝐷 = dom 𝐹 |
| Ref | Expression |
|---|---|
| smfdmss | ⊢ (𝜑 → 𝐷 ⊆ ∪ 𝑆) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | smfdmss.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ (SMblFn‘𝑆)) | |
| 2 | smfdmss.s | . . . 4 ⊢ (𝜑 → 𝑆 ∈ SAlg) | |
| 3 | smfdmss.d | . . . 4 ⊢ 𝐷 = dom 𝐹 | |
| 4 | 2, 3 | issmf 46765 | . . 3 ⊢ (𝜑 → (𝐹 ∈ (SMblFn‘𝑆) ↔ (𝐷 ⊆ ∪ 𝑆 ∧ 𝐹:𝐷⟶ℝ ∧ ∀𝑎 ∈ ℝ {𝑥 ∈ 𝐷 ∣ (𝐹‘𝑥) < 𝑎} ∈ (𝑆 ↾t 𝐷)))) |
| 5 | 1, 4 | mpbid 232 | . 2 ⊢ (𝜑 → (𝐷 ⊆ ∪ 𝑆 ∧ 𝐹:𝐷⟶ℝ ∧ ∀𝑎 ∈ ℝ {𝑥 ∈ 𝐷 ∣ (𝐹‘𝑥) < 𝑎} ∈ (𝑆 ↾t 𝐷))) |
| 6 | 5 | simp1d 1142 | 1 ⊢ (𝜑 → 𝐷 ⊆ ∪ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 = wceq 1541 ∈ wcel 2111 ∀wral 3047 {crab 3395 ⊆ wss 3902 ∪ cuni 4859 class class class wbr 5091 dom cdm 5616 ⟶wf 6477 ‘cfv 6481 (class class class)co 7346 ℝcr 11002 < clt 11143 ↾t crest 17321 SAlgcsalg 46345 SMblFncsmblfn 46732 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-cnex 11059 ax-resscn 11060 ax-pre-lttri 11077 ax-pre-lttrn 11078 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-iun 4943 df-br 5092 df-opab 5154 df-mpt 5173 df-id 5511 df-po 5524 df-so 5525 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-ov 7349 df-oprab 7350 df-mpo 7351 df-1st 7921 df-2nd 7922 df-er 8622 df-pm 8753 df-en 8870 df-dom 8871 df-sdom 8872 df-pnf 11145 df-mnf 11146 df-xr 11147 df-ltxr 11148 df-le 11149 df-ioo 13246 df-ico 13248 df-smblfn 46733 |
| This theorem is referenced by: sssmf 46775 smfsssmf 46780 issmfle 46782 smfpimltxr 46784 issmfgt 46793 smfadd 46802 issmfge 46807 smflim 46814 smfpimgtxr 46817 smfpimioo 46824 smfresal 46825 smfrec 46826 smfres 46827 smfmul 46832 smfmulc1 46833 smfco 46839 smfsuplem3 46850 smfpimne 46876 smfpimne2 46877 |
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