| Mathbox for Glauco Siliprandi |
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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 47369 | . . 3 ⊢ (𝜑 → (𝐹 ∈ (SMblFn‘𝑆) ↔ (𝐷 ⊆ ∪ 𝑆 ∧ 𝐹:𝐷⟶ℝ ∧ ∀𝑎 ∈ ℝ {𝑥 ∈ 𝐷 ∣ (𝐹‘𝑥) < 𝑎} ∈ (𝑆 ↾t 𝐷)))) |
| 5 | 1, 4 | mpbid 235 | . 2 ⊢ (𝜑 → (𝐷 ⊆ ∪ 𝑆 ∧ 𝐹:𝐷⟶ℝ ∧ ∀𝑎 ∈ ℝ {𝑥 ∈ 𝐷 ∣ (𝐹‘𝑥) < 𝑎} ∈ (𝑆 ↾t 𝐷))) |
| 6 | 5 | simp1d 1158 | 1 ⊢ (𝜑 → 𝐷 ⊆ ∪ 𝑆) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1101 = wceq 1567 ∈ wcel 2149 ∀wral 3085 {crab 3422 ⊆ wss 3911 ∪ cuni 4874 class class class wbr 5111 dom cdm 5662 ⟶wf 6533 ‘cfv 6537 (class class class)co 7411 ℝcr 11099 < clt 11243 ↾t crest 17473 SAlgcsalg 46949 SMblFncsmblfn 47336 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5259 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-pre-lttri 11174 ax-pre-lttrn 11175 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rab 3423 df-v 3463 df-sbc 3752 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7986 df-2nd 7987 df-er 8694 df-pm 8827 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-ioo 13376 df-ico 13378 df-smblfn 47337 |
| This theorem is referenced by: sssmf 47379 smfsssmf 47384 issmfle 47386 smfpimltxr 47388 issmfgt 47397 smfadd 47406 issmfge 47411 smflim 47418 smfpimgtxr 47421 smfpimioo 47428 smfresal 47429 smfrec 47430 smfres 47431 smfmul 47436 smfmulc1 47437 smfco 47443 smfsuplem3 47454 smfpimne 47480 smfpimne2 47481 |
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