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| Mirrors > Home > MPE Home > Th. List > leordtvallem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for leordtval 23558. (Contributed by Mario Carneiro, 3-Sep-2015.) |
| Ref | Expression |
|---|---|
| leordtval.1 | ⊢ 𝐴 = ran (𝑥 ∈ ℝ* ↦ (𝑥(,]+∞)) |
| leordtval.2 | ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) |
| Ref | Expression |
|---|---|
| leordtvallem2 | ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | leordtval.2 | . 2 ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) | |
| 2 | icossxr 13587 | . . . . . 6 ⊢ (-∞[,)𝑥) ⊆ ℝ* | |
| 3 | sseqin2 4123 | . . . . . 6 ⊢ ((-∞[,)𝑥) ⊆ ℝ* ↔ (ℝ* ∩ (-∞[,)𝑥)) = (-∞[,)𝑥)) | |
| 4 | 2, 3 | mpbi 233 | . . . . 5 ⊢ (ℝ* ∩ (-∞[,)𝑥)) = (-∞[,)𝑥) |
| 5 | mnfxr 11390 | . . . . . . . 8 ⊢ -∞ ∈ ℝ* | |
| 6 | simpl 488 | . . . . . . . 8 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → 𝑥 ∈ ℝ*) | |
| 7 | elico1 13543 | . . . . . . . 8 ⊢ ((-∞ ∈ ℝ* ∧ 𝑥 ∈ ℝ*) → (𝑦 ∈ (-∞[,)𝑥) ↔ (𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦 ∧ 𝑦 < 𝑥))) | |
| 8 | 5, 6, 7 | sylancr 599 | . . . . . . 7 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 ∈ (-∞[,)𝑥) ↔ (𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦 ∧ 𝑦 < 𝑥))) |
| 9 | simpr 490 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → 𝑦 ∈ ℝ*) | |
| 10 | mnfle 13288 | . . . . . . . . . 10 ⊢ (𝑦 ∈ ℝ* → -∞ ≤ 𝑦) | |
| 11 | 9, 10 | jccir 531 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦)) |
| 12 | 11 | biantrurd 542 | . . . . . . . 8 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑥 ↔ ((𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦) ∧ 𝑦 < 𝑥))) |
| 13 | df-3an 1105 | . . . . . . . 8 ⊢ ((𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦 ∧ 𝑦 < 𝑥) ↔ ((𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦) ∧ 𝑦 < 𝑥)) | |
| 14 | 12, 13 | bitr4di 292 | . . . . . . 7 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑥 ↔ (𝑦 ∈ ℝ* ∧ -∞ ≤ 𝑦 ∧ 𝑦 < 𝑥))) |
| 15 | xrltnle 11400 | . . . . . . . 8 ⊢ ((𝑦 ∈ ℝ* ∧ 𝑥 ∈ ℝ*) → (𝑦 < 𝑥 ↔ ¬ 𝑥 ≤ 𝑦)) | |
| 16 | 15 | ancoms 464 | . . . . . . 7 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 < 𝑥 ↔ ¬ 𝑥 ≤ 𝑦)) |
| 17 | 8, 14, 16 | 3bitr2d 310 | . . . . . 6 ⊢ ((𝑥 ∈ ℝ* ∧ 𝑦 ∈ ℝ*) → (𝑦 ∈ (-∞[,)𝑥) ↔ ¬ 𝑥 ≤ 𝑦)) |
| 18 | 17 | rabbi2dva 4125 | . . . . 5 ⊢ (𝑥 ∈ ℝ* → (ℝ* ∩ (-∞[,)𝑥)) = {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 19 | 4, 18 | eqtr3id 2812 | . . . 4 ⊢ (𝑥 ∈ ℝ* → (-∞[,)𝑥) = {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 20 | 19 | mpteq2ia 5203 | . . 3 ⊢ (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) = (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 21 | 20 | rneqi 5925 | . 2 ⊢ ran (𝑥 ∈ ℝ* ↦ (-∞[,)𝑥)) = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| 22 | 1, 21 | eqtri 2786 | 1 ⊢ 𝐵 = ran (𝑥 ∈ ℝ* ↦ {𝑦 ∈ ℝ* ∣ ¬ 𝑥 ≤ 𝑦}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 {crab 3416 ⊆ wss 3900 ∩ cin 4092 class class class wbr 5106 ↦ cmpt 5189 ran crn 5656 (class class class)co 7440 +∞cpnf 11364 -∞cmnf 11365 ℝ*cxr 11366 < clt 11367 ≤ cle 11368 (,]cioc 13501 [,)cico 13502 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 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 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-1st 8022 df-2nd 8023 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-ico 13506 |
| This theorem is used by: leordtval2 23557 leordtval 23558 |
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