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| Mirrors > Home > MPE Home > Th. List > Mathboxes > unibrsiga | Structured version Visualization version GIF version | ||
| Description: The union of the Borel Algebra is the set of real numbers. (Contributed by Thierry Arnoux, 21-Jan-2017.) |
| Ref | Expression |
|---|---|
| unibrsiga | ⊢ ∪ 𝔅ℝ = ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | retop 24990 | . . 3 ⊢ (topGen‘ran (,)) ∈ Top | |
| 2 | unisg 34657 | . . 3 ⊢ ((topGen‘ran (,)) ∈ Top → ∪ (sigaGen‘(topGen‘ran (,))) = ∪ (topGen‘ran (,))) | |
| 3 | 1, 2 | ax-mp 5 | . 2 ⊢ ∪ (sigaGen‘(topGen‘ran (,))) = ∪ (topGen‘ran (,)) |
| 4 | df-brsiga 34696 | . . 3 ⊢ 𝔅ℝ = (sigaGen‘(topGen‘ran (,))) | |
| 5 | 4 | unieqi 4879 | . 2 ⊢ ∪ 𝔅ℝ = ∪ (sigaGen‘(topGen‘ran (,))) |
| 6 | uniretop 24991 | . 2 ⊢ ℝ = ∪ (topGen‘ran (,)) | |
| 7 | 3, 5, 6 | 3eqtr4i 2793 | 1 ⊢ ∪ 𝔅ℝ = ℝ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 ∪ cuni 4867 ran crn 5656 ‘cfv 6533 ℝcr 11126 (,)cioo 13401 topGenctg 17525 Topctop 23121 sigaGencsigagen 34652 𝔅ℝcbrsiga 34695 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-pre-lttri 11201 ax-pre-lttrn 11202 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7417 df-oprab 7418 df-mpo 7419 df-1st 7987 df-2nd 7988 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-ioo 13405 df-topgen 17531 df-top 23122 df-bases 23174 df-siga 34622 df-sigagen 34653 df-brsiga 34696 |
| This theorem is used by: elmbfmvol2 34781 mbfmcnt 34782 br2base 34783 isrrvv 34957 orvcelval 34983 dstrvprob 34986 |
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