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Mirrors > Home > MPE Home > Th. List > leord1 | Structured version Visualization version GIF version |
Description: Infer an ordering relation from a proof in only one direction. (Contributed by Mario Carneiro, 14-Jun-2014.) |
Ref | Expression |
---|---|
ltord.1 | ⊢ (𝑥 = 𝑦 → 𝐴 = 𝐵) |
ltord.2 | ⊢ (𝑥 = 𝐶 → 𝐴 = 𝑀) |
ltord.3 | ⊢ (𝑥 = 𝐷 → 𝐴 = 𝑁) |
ltord.4 | ⊢ 𝑆 ⊆ ℝ |
ltord.5 | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℝ) |
ltord.6 | ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 < 𝑦 → 𝐴 < 𝐵)) |
Ref | Expression |
---|---|
leord1 | ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (𝐶 ≤ 𝐷 ↔ 𝑀 ≤ 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ltord.1 | . . . . 5 ⊢ (𝑥 = 𝑦 → 𝐴 = 𝐵) | |
2 | ltord.3 | . . . . 5 ⊢ (𝑥 = 𝐷 → 𝐴 = 𝑁) | |
3 | ltord.2 | . . . . 5 ⊢ (𝑥 = 𝐶 → 𝐴 = 𝑀) | |
4 | ltord.4 | . . . . 5 ⊢ 𝑆 ⊆ ℝ | |
5 | ltord.5 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℝ) | |
6 | ltord.6 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥 < 𝑦 → 𝐴 < 𝐵)) | |
7 | 1, 2, 3, 4, 5, 6 | ltord1 11431 | . . . 4 ⊢ ((𝜑 ∧ (𝐷 ∈ 𝑆 ∧ 𝐶 ∈ 𝑆)) → (𝐷 < 𝐶 ↔ 𝑁 < 𝑀)) |
8 | 7 | ancom2s 646 | . . 3 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (𝐷 < 𝐶 ↔ 𝑁 < 𝑀)) |
9 | 8 | notbid 317 | . 2 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (¬ 𝐷 < 𝐶 ↔ ¬ 𝑁 < 𝑀)) |
10 | 4 | sseli 3913 | . . . 4 ⊢ (𝐶 ∈ 𝑆 → 𝐶 ∈ ℝ) |
11 | 4 | sseli 3913 | . . . 4 ⊢ (𝐷 ∈ 𝑆 → 𝐷 ∈ ℝ) |
12 | lenlt 10984 | . . . 4 ⊢ ((𝐶 ∈ ℝ ∧ 𝐷 ∈ ℝ) → (𝐶 ≤ 𝐷 ↔ ¬ 𝐷 < 𝐶)) | |
13 | 10, 11, 12 | syl2an 595 | . . 3 ⊢ ((𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆) → (𝐶 ≤ 𝐷 ↔ ¬ 𝐷 < 𝐶)) |
14 | 13 | adantl 481 | . 2 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (𝐶 ≤ 𝐷 ↔ ¬ 𝐷 < 𝐶)) |
15 | 5 | ralrimiva 3107 | . . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝑆 𝐴 ∈ ℝ) |
16 | 3 | eleq1d 2823 | . . . . . 6 ⊢ (𝑥 = 𝐶 → (𝐴 ∈ ℝ ↔ 𝑀 ∈ ℝ)) |
17 | 16 | rspccva 3551 | . . . . 5 ⊢ ((∀𝑥 ∈ 𝑆 𝐴 ∈ ℝ ∧ 𝐶 ∈ 𝑆) → 𝑀 ∈ ℝ) |
18 | 15, 17 | sylan 579 | . . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ 𝑆) → 𝑀 ∈ ℝ) |
19 | 18 | adantrr 713 | . . 3 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → 𝑀 ∈ ℝ) |
20 | 2 | eleq1d 2823 | . . . . . 6 ⊢ (𝑥 = 𝐷 → (𝐴 ∈ ℝ ↔ 𝑁 ∈ ℝ)) |
21 | 20 | rspccva 3551 | . . . . 5 ⊢ ((∀𝑥 ∈ 𝑆 𝐴 ∈ ℝ ∧ 𝐷 ∈ 𝑆) → 𝑁 ∈ ℝ) |
22 | 15, 21 | sylan 579 | . . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ 𝑆) → 𝑁 ∈ ℝ) |
23 | 22 | adantrl 712 | . . 3 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → 𝑁 ∈ ℝ) |
24 | 19, 23 | lenltd 11051 | . 2 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (𝑀 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑀)) |
25 | 9, 14, 24 | 3bitr4d 310 | 1 ⊢ ((𝜑 ∧ (𝐶 ∈ 𝑆 ∧ 𝐷 ∈ 𝑆)) → (𝐶 ≤ 𝐷 ↔ 𝑀 ≤ 𝑁)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∀wral 3063 ⊆ wss 3883 class class class wbr 5070 ℝcr 10801 < clt 10940 ≤ cle 10941 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-resscn 10859 ax-pre-lttri 10876 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 |
This theorem is referenced by: eqord1 11433 leord2 11435 lermxnn0 40688 lermy 40693 |
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