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| Mirrors > Home > MPE Home > Th. List > zorn2lem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for zorn2 10428. (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 |
|---|---|
| zorn2lem2 | ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦)𝑅(𝐹‘𝑥))) |
| 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 | zorn2lem1 10418 | . . 3 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝐹‘𝑥) ∈ 𝐷) |
| 5 | breq2 5104 | . . . . . 6 ⊢ (𝑧 = (𝐹‘𝑥) → (𝑔𝑅𝑧 ↔ 𝑔𝑅(𝐹‘𝑥))) | |
| 6 | 5 | ralbidv 3161 | . . . . 5 ⊢ (𝑧 = (𝐹‘𝑥) → (∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅𝑧 ↔ ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅(𝐹‘𝑥))) |
| 7 | 6, 3 | elrab2 3651 | . . . 4 ⊢ ((𝐹‘𝑥) ∈ 𝐷 ↔ ((𝐹‘𝑥) ∈ 𝐴 ∧ ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅(𝐹‘𝑥))) |
| 8 | 7 | simprbi 497 | . . 3 ⊢ ((𝐹‘𝑥) ∈ 𝐷 → ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅(𝐹‘𝑥)) |
| 9 | 4, 8 | syl 17 | . 2 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → ∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅(𝐹‘𝑥)) |
| 10 | 1 | tfr1 8338 | . . . 4 ⊢ 𝐹 Fn On |
| 11 | onss 7740 | . . . 4 ⊢ (𝑥 ∈ On → 𝑥 ⊆ On) | |
| 12 | fnfvima 7189 | . . . . 5 ⊢ ((𝐹 Fn On ∧ 𝑥 ⊆ On ∧ 𝑦 ∈ 𝑥) → (𝐹‘𝑦) ∈ (𝐹 “ 𝑥)) | |
| 13 | 12 | 3expia 1122 | . . . 4 ⊢ ((𝐹 Fn On ∧ 𝑥 ⊆ On) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦) ∈ (𝐹 “ 𝑥))) |
| 14 | 10, 11, 13 | sylancr 588 | . . 3 ⊢ (𝑥 ∈ On → (𝑦 ∈ 𝑥 → (𝐹‘𝑦) ∈ (𝐹 “ 𝑥))) |
| 15 | 14 | adantr 480 | . 2 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦) ∈ (𝐹 “ 𝑥))) |
| 16 | breq1 5103 | . . 3 ⊢ (𝑔 = (𝐹‘𝑦) → (𝑔𝑅(𝐹‘𝑥) ↔ (𝐹‘𝑦)𝑅(𝐹‘𝑥))) | |
| 17 | 16 | rspccv 3575 | . 2 ⊢ (∀𝑔 ∈ (𝐹 “ 𝑥)𝑔𝑅(𝐹‘𝑥) → ((𝐹‘𝑦) ∈ (𝐹 “ 𝑥) → (𝐹‘𝑦)𝑅(𝐹‘𝑥))) |
| 18 | 9, 15, 17 | sylsyld 61 | 1 ⊢ ((𝑥 ∈ On ∧ (𝑤 We 𝐴 ∧ 𝐷 ≠ ∅)) → (𝑦 ∈ 𝑥 → (𝐹‘𝑦)𝑅(𝐹‘𝑥))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 ∀wral 3052 {crab 3401 Vcvv 3442 ⊆ wss 3903 ∅c0 4287 class class class wbr 5100 ↦ cmpt 5181 We wwe 5584 ran crn 5633 “ cima 5635 Oncon0 6325 Fn wfn 6495 ‘cfv 6500 ℩crio 7324 recscrecs 8312 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 |
| This theorem is referenced by: zorn2lem3 10420 zorn2lem6 10423 |
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