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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 23269 | . 2 ⊢ (ordTop‘ ≤ ) = (topGen‘(fi‘(𝐴 ∪ 𝐵))) |
| 4 | letsr 18625 | . . . 4 ⊢ ≤ ∈ TosetRel | |
| 5 | ledm 18622 | . . . . 5 ⊢ ℝ* = dom ≤ | |
| 6 | 1 | leordtvallem1 23267 | . . . . 5 ⊢ 𝐴 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑦 ≤ 𝑥}) |
| 7 | 1, 2 | leordtvallem2 23268 | . . . . 5 ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 8 | leordtval.3 | . . . . . 6 ⊢ 𝐶 = ran (,) | |
| 9 | df-ioo 13353 | . . . . . . . 8 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (𝑎 < 𝑦 ∧ 𝑦 < 𝑏)}) | |
| 10 | xrltnle 11249 | . . . . . . . . . . . 12 ⊢ ((𝑎 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑎 < 𝑦 ↔ ¬ 𝑦 ≤ 𝑎)) | |
| 11 | 10 | adantlr 725 | . . . . . . . . . . 11 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → (𝑎 < 𝑦 ↔ ¬ 𝑦 ≤ 𝑎)) |
| 12 | xrltnle 11249 | . . . . . . . . . . . . 13 ⊢ ((𝑦 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) | |
| 13 | 12 | ancoms 462 | . . . . . . . . . . . 12 ⊢ ((𝑏 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) |
| 14 | 13 | adantll 724 | . . . . . . . . . . 11 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑏 ↔ ¬ 𝑏 ≤ 𝑦)) |
| 15 | 11, 14 | anbi12d 641 | . . . . . . . . . 10 ⊢ (((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) ∧ 𝑦 ∈ ℝ*) → ((𝑎 < 𝑦 ∧ 𝑦 < 𝑏) ↔ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦))) |
| 16 | 15 | rabbidva 3420 | . . . . . . . . 9 ⊢ ((𝑎 ∈ ℝ* ∧ 𝑏 ∈ ℝ*) → {𝑦 ∈ ℝ* ∣ (𝑎 < 𝑦 ∧ 𝑦 < 𝑏)} = {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 17 | 16 | mpoeq3ia 7474 | . . . . . . . 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 2785 | . . . . . . 7 ⊢ (,) = (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 19 | 18 | rneqi 5913 | . . . . . 6 ⊢ ran (,) = ran (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 20 | 8, 19 | eqtri 2785 | . . . . 5 ⊢ 𝐶 = ran (𝑎 ∈ ℝ*, 𝑏 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ (¬ 𝑦 ≤ 𝑎 ∧ ¬ 𝑏 ≤ 𝑦)}) |
| 21 | 5, 6, 7, 20 | ordtbas2 23248 | . . . 4 ⊢ ( ≤ ∈ TosetRel → (fi‘(𝐴 ∪ 𝐵)) = ((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| 22 | 4, 21 | ax-mp 5 | . . 3 ⊢ (fi‘(𝐴 ∪ 𝐵)) = ((𝐴 ∪ 𝐵) ∪ 𝐶) |
| 23 | 22 | fveq2i 6870 | . 2 ⊢ (topGen‘(fi‘(𝐴 ∪ 𝐵))) = (topGen‘((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| 24 | 3, 23 | eqtri 2785 | 1 ⊢ (ordTop‘ ≤ ) = (topGen‘((𝐴 ∪ 𝐵) ∪ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ↔ wb 208 ∧ wa 399 = wceq 1560 ∈ wcel 2142 {crab 3414 ∪ cun 3902 class class class wbr 5100 ↦ cmpt 5181 ran crn 5648 ‘cfv 6521 (class class class)co 7396 ∈ cmpo 7398 ficfi 9356 +∞cpnf 11213 -∞cmnf 11214 ℝ*cxr 11215 < clt 11216 ≤ cle 11217 (,)cioo 13349 (,]cioc 13350 [,)cico 13351 topGenctg 17466 ordTopcordt 17529 TosetRel ctsr 18597 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-1o 8437 df-2o 8438 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-fi 9357 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-ioo 13353 df-ioc 13354 df-ico 13355 df-icc 13356 df-topgen 17472 df-ordt 17531 df-ps 18598 df-tsr 18599 df-top 22951 df-bases 23003 |
| This theorem is referenced by: iocpnfordt 23272 icomnfordt 23273 iooordt 23274 pnfnei 23277 mnfnei 23278 xrtgioo 24864 |
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