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| Mirrors > Home > MPE Home > Th. List > leordtval | Structured version Visualization version GIF version | ||
| Description: The topology of the extended reals. (Contributed by Mario Carneiro, 3-Sep-2015.) |
| Ref | Expression |
|---|---|
| leordtval.1 | ⊢ 𝐴 = ran (𝑥 ∈ ℝ* ↦ (𝑥(,]+∞)) |
| leordtval.2 | ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) |
| leordtval.3 | ⊢ 𝐶 = ran (,) |
| Ref | Expression |
|---|---|
| leordtval | ⊢ (ordTop‘ ≤ ) = (topGen‘((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | leordtval.1 | . . 3 ⊢ 𝐴 = ran (𝑥 ∈ ℝ* ↦ (𝑥(,]+∞)) | |
| 2 | leordtval.2 | . . 3 ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) | |
| 3 | 1, 2 | leordtval2 23539 | . 2 ⊢ (ordTop‘ ≤ ) = (topGen‘(fi‘(𝐴 ∪ 𝐵))) |
| 4 | letsr 18776 | . . . 4 ⊢ ≤ ∈ TosetRel | |
| 5 | ledm 18773 | . . . . 5 ⊢ ℝ* = dom ≤ | |
| 6 | 1 | leordtvallem1 23537 | . . . . 5 ⊢ 𝐴 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑦 ≤ 𝑥}) |
| 7 | 1, 2 | leordtvallem2 23538 | . . . . 5 ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 8 | leordtval.3 | . . . . . 6 ⊢ 𝐶 = ran (,) | |
| 9 | df-ioo 13487 | . . . . . . . 8 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (𝑎 < 𝑦 ∧ 𝑦 < 𝑏)}) | |
| 10 | xrltnle 11383 | . . . . . . . . . . . 12 ⊢ ((𝑎 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑎 < 𝑦 ↔ ¬ 𝑦 ≤ 𝑎)) | |
| 11 | 10 | adantlr 728 | . . . . . . . . . . 11 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → (𝑎 < 𝑦 ↔ ¬ 𝑦 ≤ 𝑎)) |
| 12 | xrltnle 11383 | . . . . . . . . . . . . 13 ⊢ ((𝑦 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) | |
| 13 | 12 | ancoms 464 | . . . . . . . . . . . 12 ⊢ ((𝑏 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) |
| 14 | 13 | adantll 727 | . . . . . . . . . . 11 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) |
| 15 | 11, 14 | anbi12d 644 | . . . . . . . . . 10 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → ((𝑎 < 𝑦 ∧ 𝑦 < 𝑏) ↔ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦))) |
| 16 | 15 | rabbidva 3418 | . . . . . . . . 9 ⊢ ((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) → {𝑦 ∈ ℝ* ∣ (𝑎 < 𝑦 ∧ 𝑦 < 𝑏)} = {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 17 | 16 | mpoeq3ia 7502 | . . . . . . . 8 ⊢ (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (𝑎 < 𝑦 ∧ 𝑦 < 𝑏)}) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 18 | 9, 17 | eqtri 2783 | . . . . . . 7 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 19 | 18 | rneqi 5920 | . . . . . 6 ⊢ ran (,) = ran (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 20 | 8, 19 | eqtri 2783 | . . . . 5 ⊢ 𝐶 = ran (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 21 | 5, 6, 7, 20 | ordtbas2 23518 | . . . 4 ⊢ ( ≤ ∈ TosetRel → (fi‘(𝐴 ∪ 𝐵)) = ((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| 22 | 4, 21 | ax-mp 5 | . . 3 ⊢ (fi‘(𝐴 ∪ 𝐵)) = ((𝐴 ∪ 𝐵) ∪ 𝐶) |
| 23 | 22 | fveq2i 6893 | . 2 ⊢ (topGen‘(fi‘(𝐴 ∪ 𝐵))) = (topGen‘((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| 24 | 3, 23 | eqtri 2783 | 1 ⊢ (ordTop‘ ≤ ) = (topGen‘((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 {crab 3412 ∪ cun 4148 class class class wbr 5102 ↦ cmpt 5185 ran crn 5652 ‘cfv 6543 (class class class)co 7424 ∈ cmpo 7426 ficfi 9409 +∞cpnf 11347 -∞cmnf 11348 ℝ*cxr 11349 < clt 11350 ≤ cle 11351 (,)cioo 13483 (,]cioc 13484 [,)cico 13485 topGenctg 17617 ordTopcordt 17680 TosetRel ctsr 18748 |
| 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-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 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 |
| 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-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-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-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-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-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-1st 8005 df-2nd 8006 df-1o 8483 df-2o 8484 df-er 8724 df-en 8981 df-dom 8982 df-sdom 8983 df-fin 8984 df-fi 9410 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-ioo 13487 df-ioc 13488 df-ico 13489 df-icc 13490 df-topgen 17623 df-ordt 17682 df-ps 18749 df-tsr 18750 df-top 23221 df-bases 23273 |
| This theorem is used by: iocpnfordt 23542 icomnfordt 23543 iooordt 23544 pnfnei 23547 mnfnei 23548 xrtgioo 25135 |
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