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| Mirrors > Home > MPE Home > Th. List > unirnioo | Structured version Visualization version GIF version | ||
| Description: The union of the range of the open interval function. (Contributed by NM, 7-May-2007.) (Revised by Mario Carneiro, 30-Jan-2014.) |
| Ref | Expression |
|---|---|
| unirnioo | ⊢ ℝ = ∪ ran (,) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ioomax 13453 | . . . 4 ⊢ (-∞(,)+∞) = ℝ | |
| 2 | ioof 13478 | . . . . . 6 ⊢ (,):(ℝ* × ℝ*)⟶𝒫 ℝ | |
| 3 | ffn 6705 | . . . . . 6 ⊢ ((,):(ℝ* × ℝ*)⟶𝒫 ℝ → (,) Fn (ℝ* × ℝ*)) | |
| 4 | 2, 3 | ax-mp 5 | . . . . 5 ⊢ (,) Fn (ℝ* × ℝ*) |
| 5 | mnfxr 11270 | . . . . 5 ⊢ -∞ ∈ ℝ* | |
| 6 | pnfxr 11267 | . . . . 5 ⊢ +∞ ∈ ℝ* | |
| 7 | fnovrn 7585 | . . . . 5 ⊢ (((,) Fn (ℝ* × ℝ*) ∧ -∞ ∈ ℝ* ∧ +∞ ∈ ℝ*) → (-∞(,)+∞) ∈ ran (,)) | |
| 8 | 4, 5, 6, 7 | mp3an 1490 | . . . 4 ⊢ (-∞(,)+∞) ∈ ran (,) |
| 9 | 1, 8 | eqeltrri 2860 | . . 3 ⊢ ℝ ∈ ran (,) |
| 10 | elssuni 4904 | . . 3 ⊢ (ℝ ∈ ran (,) → ℝ ⊆ ∪ ran (,)) | |
| 11 | 9, 10 | ax-mp 5 | . 2 ⊢ ℝ ⊆ ∪ ran (,) |
| 12 | frn 6713 | . . . 4 ⊢ ((,):(ℝ* × ℝ*)⟶𝒫 ℝ → ran (,) ⊆ 𝒫 ℝ) | |
| 13 | 2, 12 | ax-mp 5 | . . 3 ⊢ ran (,) ⊆ 𝒫 ℝ |
| 14 | sspwuni 5066 | . . 3 ⊢ (ran (,) ⊆ 𝒫 ℝ ↔ ∪ ran (,) ⊆ ℝ) | |
| 15 | 13, 14 | mpbi 233 | . 2 ⊢ ∪ ran (,) ⊆ ℝ |
| 16 | 11, 15 | eqssi 3953 | 1 ⊢ ℝ = ∪ ran (,) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2143 ⊆ wss 3905 𝒫 cpw 4562 ∪ cuni 4872 × cxp 5659 ran crn 5662 Fn wfn 6531 ⟶wf 6532 (class class class)co 7410 ℝcr 11103 +∞cpnf 11244 -∞cmnf 11245 ℝ*cxr 11246 (,)cioo 13376 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11160 ax-resscn 11161 ax-pre-lttri 11178 ax-pre-lttrn 11179 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-po 5569 df-so 5570 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-1st 7982 df-2nd 7983 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-ioo 13380 |
| This theorem is used by: pnfnei 23386 mnfnei 23387 uniretop 24928 tgioo 24962 xrtgioo 24973 bndth 25126 relowlssretop 38037 relowlpssretop 38038 mblfinlem3 38338 mblfinlem4 38339 ismblfin 38340 |
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