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| Mirrors > Home > MPE Home > Th. List > zorn2lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma for zorn2 10464. (Contributed by NM, 3-Apr-1997.) (Revised by Mario Carneiro, 9-May-2015.) |
| Ref | Expression |
|---|---|
| zorn2lem.3 | ⊢ 𝐹 = recs((𝑓 ∈ V ↦ (℩𝑣 ∈ 𝐶 ∀𝑢 ∈ 𝐶 ¬ 𝑢𝑤𝑣))) |
| zorn2lem.4 | ⊢ 𝐶 = {𝑧 ∈ 𝐴 ∣ ∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧} |
| zorn2lem.5 | ⊢ 𝐷 = {𝑧 ∈ 𝐴 ∣ ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅𝑧} |
| Ref | Expression |
|---|---|
| zorn2lem3 | ⊢ ((𝑅 Po 𝐴 ∧ (𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅))) → (𝑦 ∈ 𝑥 → ¬ (𝐹‘𝑥) = (𝐹‘𝑦))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zorn2lem.3 | . . . 4 ⊢ 𝐹 = recs((𝑓 ∈ V ↦ (℩𝑣 ∈ 𝐶 ∀𝑢 ∈ 𝐶 ¬ 𝑢𝑤𝑣))) | |
| 2 | zorn2lem.4 | . . . 4 ⊢ 𝐶 = {𝑧 ∈ 𝐴 ∣ ∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧} | |
| 3 | zorn2lem.5 | . . . 4 ⊢ 𝐷 = {𝑧 ∈ 𝐴 ∣ ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅𝑧} | |
| 4 | 1, 2, 3 | zorn2lem2 10455 | . . 3 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦)𝑅(𝐹‘𝑥))) |
| 5 | 4 | adantl 485 | . 2 ⊢ ((𝑅 Po 𝐴 ∧ (𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅))) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦)𝑅(𝐹‘𝑥))) |
| 6 | 3 | ssrab3 4036 | . . . 4 ⊢ 𝐷 ⊆ 𝐴 |
| 7 | 1, 2, 3 | zorn2lem1 10454 | . . . 4 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝐹‘𝑥) ∈ 𝐷) |
| 8 | 6, 7 | sselid 3935 | . . 3 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝐹‘𝑥) ∈ 𝐴) |
| 9 | breq1 5104 | . . . . . 6 ⊢ ((𝐹‘𝑥) = (𝐹‘𝑦) → ((𝐹‘𝑥)𝑅(𝐹‘𝑥) ↔ (𝐹‘𝑦)𝑅(𝐹‘𝑥))) | |
| 10 | 9 | biimprcd 252 | . . . . 5 ⊢ ((𝐹‘𝑦)𝑅(𝐹‘𝑥) → ((𝐹‘𝑥) = (𝐹‘𝑦) → (𝐹‘𝑥)𝑅(𝐹‘𝑥))) |
| 11 | poirr 5568 | . . . . 5 ⊢ ((𝑅 Po 𝐴 ∧ (𝐹‘𝑥) ∈ 𝐴) → ¬ (𝐹‘𝑥)𝑅(𝐹‘𝑥)) | |
| 12 | 10, 11 | nsyli 157 | . . . 4 ⊢ ((𝐹‘𝑦)𝑅(𝐹‘𝑥) → ((𝑅 Po 𝐴 ∧ (𝐹‘𝑥) ∈ 𝐴) → ¬ (𝐹‘𝑥) = (𝐹‘𝑦))) |
| 13 | 12 | com12 32 | . . 3 ⊢ ((𝑅 Po 𝐴 ∧ (𝐹‘𝑥) ∈ 𝐴) → ((𝐹‘𝑦)𝑅(𝐹‘𝑥) → ¬ (𝐹‘𝑥) = (𝐹‘𝑦))) |
| 14 | 8, 13 | sylan2 602 | . 2 ⊢ ((𝑅 Po 𝐴 ∧ (𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅))) → ((𝐹‘𝑦)𝑅(𝐹‘𝑥) → ¬ (𝐹‘𝑥) = (𝐹‘𝑦))) |
| 15 | 5, 14 | syld 47 | 1 ⊢ ((𝑅 Po 𝐴 ∧ (𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅))) → (𝑦 ∈ 𝑥 → ¬ (𝐹‘𝑥) = (𝐹‘𝑦))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 = wceq 1561 ∈ wcel 2143 ≠ wne 2958 ∀wral 3077 {crab 3415 Vcvv 3455 ∅c0 4286 class class class wbr 5101 ↦ cmpt 5182 Po wpo 5554 We wwe 5600 ran crn 5649 “ cima 5651 Oncon0 6347 ‘cfv 6522 ℩crio 7353 recscrecs 8342 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5228 ax-sep 5247 ax-nul 5257 ax-pr 5391 ax-un 7719 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6289 df-ord 6350 df-on 6351 df-suc 6353 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-riota 7354 df-ov 7400 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 |
| This theorem is referenced by: zorn2lem4 10457 |
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