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Mirrors > Home > MPE Home > Th. List > Mathboxes > brsiga | Structured version Visualization version GIF version |
Description: The Borel Algebra on real numbers is a Borel sigma-algebra. (Contributed by Thierry Arnoux, 27-Dec-2016.) |
Ref | Expression |
---|---|
brsiga | ⊢ 𝔅ℝ ∈ (sigaGen “ Top) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-brsiga 32129 | . 2 ⊢ 𝔅ℝ = (sigaGen‘(topGen‘ran (,))) | |
2 | retop 23906 | . . 3 ⊢ (topGen‘ran (,)) ∈ Top | |
3 | df-sigagen 32086 | . . . . 5 ⊢ sigaGen = (𝑥 ∈ V ↦ ∩ {𝑠 ∈ (sigAlgebra‘∪ 𝑥) ∣ 𝑥 ⊆ 𝑠}) | |
4 | 3 | funmpt2 6469 | . . . 4 ⊢ Fun sigaGen |
5 | fvex 6781 | . . . . . 6 ⊢ (topGen‘ran (,)) ∈ V | |
6 | sigagensiga 32088 | . . . . . 6 ⊢ ((topGen‘ran (,)) ∈ V → (sigaGen‘(topGen‘ran (,))) ∈ (sigAlgebra‘∪ (topGen‘ran (,)))) | |
7 | elrnsiga 32073 | . . . . . 6 ⊢ ((sigaGen‘(topGen‘ran (,))) ∈ (sigAlgebra‘∪ (topGen‘ran (,))) → (sigaGen‘(topGen‘ran (,))) ∈ ∪ ran sigAlgebra) | |
8 | 5, 6, 7 | mp2b 10 | . . . . 5 ⊢ (sigaGen‘(topGen‘ran (,))) ∈ ∪ ran sigAlgebra |
9 | 0elsiga 32061 | . . . . 5 ⊢ ((sigaGen‘(topGen‘ran (,))) ∈ ∪ ran sigAlgebra → ∅ ∈ (sigaGen‘(topGen‘ran (,)))) | |
10 | elfvdm 6800 | . . . . 5 ⊢ (∅ ∈ (sigaGen‘(topGen‘ran (,))) → (topGen‘ran (,)) ∈ dom sigaGen) | |
11 | 8, 9, 10 | mp2b 10 | . . . 4 ⊢ (topGen‘ran (,)) ∈ dom sigaGen |
12 | funfvima 7100 | . . . 4 ⊢ ((Fun sigaGen ∧ (topGen‘ran (,)) ∈ dom sigaGen) → ((topGen‘ran (,)) ∈ Top → (sigaGen‘(topGen‘ran (,))) ∈ (sigaGen “ Top))) | |
13 | 4, 11, 12 | mp2an 688 | . . 3 ⊢ ((topGen‘ran (,)) ∈ Top → (sigaGen‘(topGen‘ran (,))) ∈ (sigaGen “ Top)) |
14 | 2, 13 | ax-mp 5 | . 2 ⊢ (sigaGen‘(topGen‘ran (,))) ∈ (sigaGen “ Top) |
15 | 1, 14 | eqeltri 2836 | 1 ⊢ 𝔅ℝ ∈ (sigaGen “ Top) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2109 {crab 3069 Vcvv 3430 ⊆ wss 3891 ∅c0 4261 ∪ cuni 4844 ∩ cint 4884 dom cdm 5588 ran crn 5589 “ cima 5591 Fun wfun 6424 ‘cfv 6430 (,)cioo 13061 topGenctg 17129 Topctop 22023 sigAlgebracsiga 32055 sigaGencsigagen 32085 𝔅ℝcbrsiga 32128 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-pre-lttri 10929 ax-pre-lttrn 10930 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-int 4885 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-po 5502 df-so 5503 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-ov 7271 df-oprab 7272 df-mpo 7273 df-1st 7817 df-2nd 7818 df-er 8472 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-ioo 13065 df-topgen 17135 df-top 22024 df-bases 22077 df-siga 32056 df-sigagen 32086 df-brsiga 32129 |
This theorem is referenced by: (None) |
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