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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > smfid | Structured version Visualization version GIF version |
Description: The identity function is Borel sigma-measurable. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
Ref | Expression |
---|---|
smfid.j | ⊢ 𝐽 = (topGen‘ran (,)) |
smfid.b | ⊢ 𝐵 = (SalGen‘𝐽) |
smfid.a | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
Ref | Expression |
---|---|
smfid | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑥) ∈ (SMblFn‘𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | smfid.a | . 2 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
2 | 1 | adantr 466 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐴 ⊆ ℝ) |
3 | simpr 471 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴) | |
4 | 2, 3 | sseldd 3751 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ) |
5 | eqid 2770 | . . 3 ⊢ (𝑥 ∈ 𝐴 ↦ 𝑥) = (𝑥 ∈ 𝐴 ↦ 𝑥) | |
6 | 4, 5 | fmptd 6527 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑥):𝐴⟶ℝ) |
7 | simpr 471 | . . . . . 6 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ≤ 𝑧) → 𝑦 ≤ 𝑧) | |
8 | 5 | a1i 11 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → (𝑥 ∈ 𝐴 ↦ 𝑥) = (𝑥 ∈ 𝐴 ↦ 𝑥)) |
9 | simpr 471 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑥 = 𝑦) → 𝑥 = 𝑦) | |
10 | simpr 471 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → 𝑦 ∈ 𝐴) | |
11 | 8, 9, 10, 10 | fvmptd 6430 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) = 𝑦) |
12 | 11 | ad2antrr 697 | . . . . . . 7 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ≤ 𝑧) → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) = 𝑦) |
13 | 5 | a1i 11 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐴) → (𝑥 ∈ 𝐴 ↦ 𝑥) = (𝑥 ∈ 𝐴 ↦ 𝑥)) |
14 | simpr 471 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑧 ∈ 𝐴) ∧ 𝑥 = 𝑧) → 𝑥 = 𝑧) | |
15 | simpr 471 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ 𝐴) | |
16 | 13, 14, 15, 15 | fvmptd 6430 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧) = 𝑧) |
17 | 16 | ad4ant13 1205 | . . . . . . 7 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ≤ 𝑧) → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧) = 𝑧) |
18 | 12, 17 | breq12d 4797 | . . . . . 6 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ≤ 𝑧) → (((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) ≤ ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧) ↔ 𝑦 ≤ 𝑧)) |
19 | 7, 18 | mpbird 247 | . . . . 5 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ≤ 𝑧) → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) ≤ ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧)) |
20 | 19 | ex 397 | . . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝐴) ∧ 𝑧 ∈ 𝐴) → (𝑦 ≤ 𝑧 → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) ≤ ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧))) |
21 | 20 | ralrimiva 3114 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) ≤ ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧))) |
22 | 21 | ralrimiva 3114 | . 2 ⊢ (𝜑 → ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐴 (𝑦 ≤ 𝑧 → ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑦) ≤ ((𝑥 ∈ 𝐴 ↦ 𝑥)‘𝑧))) |
23 | smfid.j | . 2 ⊢ 𝐽 = (topGen‘ran (,)) | |
24 | smfid.b | . 2 ⊢ 𝐵 = (SalGen‘𝐽) | |
25 | 1, 6, 22, 23, 24 | incsmf 41465 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑥) ∈ (SMblFn‘𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 382 = wceq 1630 ∈ wcel 2144 ∀wral 3060 ⊆ wss 3721 class class class wbr 4784 ↦ cmpt 4861 ran crn 5250 ‘cfv 6031 ℝcr 10136 ≤ cle 10276 (,)cioo 12379 topGenctg 16305 SalGencsalgen 41043 SMblFncsmblfn 41423 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1869 ax-4 1884 ax-5 1990 ax-6 2056 ax-7 2092 ax-8 2146 ax-9 2153 ax-10 2173 ax-11 2189 ax-12 2202 ax-13 2407 ax-ext 2750 ax-rep 4902 ax-sep 4912 ax-nul 4920 ax-pow 4971 ax-pr 5034 ax-un 7095 ax-inf2 8701 ax-cnex 10193 ax-resscn 10194 ax-1cn 10195 ax-icn 10196 ax-addcl 10197 ax-addrcl 10198 ax-mulcl 10199 ax-mulrcl 10200 ax-mulcom 10201 ax-addass 10202 ax-mulass 10203 ax-distr 10204 ax-i2m1 10205 ax-1ne0 10206 ax-1rid 10207 ax-rnegex 10208 ax-rrecex 10209 ax-cnre 10210 ax-pre-lttri 10211 ax-pre-lttrn 10212 ax-pre-ltadd 10213 ax-pre-mulgt0 10214 ax-pre-sup 10215 |
This theorem depends on definitions: df-bi 197 df-an 383 df-or 827 df-3or 1071 df-3an 1072 df-tru 1633 df-ex 1852 df-nf 1857 df-sb 2049 df-eu 2621 df-mo 2622 df-clab 2757 df-cleq 2763 df-clel 2766 df-nfc 2901 df-ne 2943 df-nel 3046 df-ral 3065 df-rex 3066 df-reu 3067 df-rmo 3068 df-rab 3069 df-v 3351 df-sbc 3586 df-csb 3681 df-dif 3724 df-un 3726 df-in 3728 df-ss 3735 df-pss 3737 df-nul 4062 df-if 4224 df-pw 4297 df-sn 4315 df-pr 4317 df-tp 4319 df-op 4321 df-uni 4573 df-int 4610 df-iun 4654 df-iin 4655 df-br 4785 df-opab 4845 df-mpt 4862 df-tr 4885 df-id 5157 df-eprel 5162 df-po 5170 df-so 5171 df-fr 5208 df-se 5209 df-we 5210 df-xp 5255 df-rel 5256 df-cnv 5257 df-co 5258 df-dm 5259 df-rn 5260 df-res 5261 df-ima 5262 df-pred 5823 df-ord 5869 df-on 5870 df-lim 5871 df-suc 5872 df-iota 5994 df-fun 6033 df-fn 6034 df-f 6035 df-f1 6036 df-fo 6037 df-f1o 6038 df-fv 6039 df-isom 6040 df-riota 6753 df-ov 6795 df-oprab 6796 df-mpt2 6797 df-om 7212 df-1st 7314 df-2nd 7315 df-wrecs 7558 df-recs 7620 df-rdg 7658 df-er 7895 df-map 8010 df-pm 8011 df-en 8109 df-dom 8110 df-sdom 8111 df-sup 8503 df-inf 8504 df-card 8964 df-acn 8967 df-pnf 10277 df-mnf 10278 df-xr 10279 df-ltxr 10280 df-le 10281 df-sub 10469 df-neg 10470 df-div 10886 df-nn 11222 df-n0 11494 df-z 11579 df-uz 11888 df-q 11991 df-rp 12035 df-ioo 12383 df-ioc 12384 df-ico 12385 df-fl 12800 df-rest 16290 df-topgen 16311 df-top 20918 df-bases 20970 df-salg 41040 df-salgen 41044 df-smblfn 41424 |
This theorem is referenced by: smf2id 41522 |
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