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| Mirrors > Home > MPE Home > Th. List > Mathboxes > smfpimgtxrmpt | Structured version Visualization version GIF version | ||
| Description: Given a function measurable w.r.t. to a sigma-algebra, the preimage of an open interval unbounded above is in the subspace sigma-algebra induced by its domain. (Contributed by Glauco Siliprandi, 26-Jun-2021.) (Revised by Glauco Siliprandi, 20-Dec-2024.) |
| Ref | Expression |
|---|---|
| smfpimgtxrmpt.x | ⊢ Ⅎ𝑥𝜑 |
| smfpimgtxrmpt.s | ⊢ (𝜑 → 𝑆 ∈ SAlg) |
| smfpimgtxrmpt.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑉) |
| smfpimgtxrmpt.f | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ (SMblFn‘𝑆)) |
| smfpimgtxrmpt.l | ⊢ (𝜑 → 𝐿 ∈ ℝ*) |
| Ref | Expression |
|---|---|
| smfpimgtxrmpt | ⊢ (𝜑 → {𝑥 ∈ 𝐴 ∣ 𝐿 < 𝐵} ∈ (𝑆 ↾t 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | smfpimgtxrmpt.x | . 2 ⊢ Ⅎ𝑥𝜑 | |
| 2 | nfcv 2922 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 3 | smfpimgtxrmpt.s | . 2 ⊢ (𝜑 → 𝑆 ∈ SAlg) | |
| 4 | smfpimgtxrmpt.b | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑉) | |
| 5 | smfpimgtxrmpt.f | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ (SMblFn‘𝑆)) | |
| 6 | smfpimgtxrmpt.l | . 2 ⊢ (𝜑 → 𝐿 ∈ ℝ*) | |
| 7 | 1, 2, 3, 4, 5, 6 | smfpimgtxrmptf 47902 | 1 ⊢ (𝜑 → {𝑥 ∈ 𝐴 ∣ 𝐿 < 𝐵} ∈ (𝑆 ↾t 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 Ⅎwnf 1815 ∈ wcel 2144 {crab 3412 class class class wbr 5102 ↦ cmpt 5185 ‘cfv 6543 (class class class)co 7424 ℝ*cxr 11349 < clt 11350 ↾t crest 17600 SAlgcsalg 47426 SMblFncsmblfn 47813 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-inf2 9649 ax-cc 10520 ax-cnex 11263 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 ax-pre-sup 11285 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-iin 4953 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-1st 8005 df-2nd 8006 df-frecs 8306 df-wrecs 8337 df-recs 8386 df-rdg 8425 df-1o 8483 df-er 8724 df-map 8856 df-pm 8857 df-en 8981 df-dom 8982 df-sdom 8983 df-fin 8984 df-sup 9441 df-inf 9442 df-card 10027 df-acn 10030 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-div 11981 df-nn 12343 df-n0 12614 df-z 12701 df-uz 12973 df-q 13083 df-rp 13128 df-ioo 13487 df-ico 13489 df-fl 13939 df-rest 17602 df-salg 47427 df-smblfn 47814 |
| This theorem is used by: smfpimioompt 47904 |
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