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| Mirrors > Home > ILE Home > Th. List > tfrlemibex | GIF version | ||
| Description: The set 𝐵 exists. Lemma for tfrlemi1 6428. (Contributed by Jim Kingdon, 17-Mar-2019.) (Proof shortened by Mario Carneiro, 24-May-2019.) |
| Ref | Expression |
|---|---|
| tfrlemisucfn.1 | ⊢ 𝐴 = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝐹‘(𝑓 ↾ 𝑦)))} |
| tfrlemisucfn.2 | ⊢ (𝜑 → ∀𝑥(Fun 𝐹 ∧ (𝐹‘𝑥) ∈ V)) |
| tfrlemi1.3 | ⊢ 𝐵 = {ℎ ∣ ∃𝑧 ∈ 𝑥 ∃𝑔(𝑔 Fn 𝑧 ∧ 𝑔 ∈ 𝐴 ∧ ℎ = (𝑔 ∪ {〈𝑧, (𝐹‘𝑔)〉}))} |
| tfrlemi1.4 | ⊢ (𝜑 → 𝑥 ∈ On) |
| tfrlemi1.5 | ⊢ (𝜑 → ∀𝑧 ∈ 𝑥 ∃𝑔(𝑔 Fn 𝑧 ∧ ∀𝑤 ∈ 𝑧 (𝑔‘𝑤) = (𝐹‘(𝑔 ↾ 𝑤)))) |
| Ref | Expression |
|---|---|
| tfrlemibex | ⊢ (𝜑 → 𝐵 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tfrlemisucfn.1 | . . . 4 ⊢ 𝐴 = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝐹‘(𝑓 ↾ 𝑦)))} | |
| 2 | tfrlemisucfn.2 | . . . 4 ⊢ (𝜑 → ∀𝑥(Fun 𝐹 ∧ (𝐹‘𝑥) ∈ V)) | |
| 3 | tfrlemi1.3 | . . . 4 ⊢ 𝐵 = {ℎ ∣ ∃𝑧 ∈ 𝑥 ∃𝑔(𝑔 Fn 𝑧 ∧ 𝑔 ∈ 𝐴 ∧ ℎ = (𝑔 ∪ {〈𝑧, (𝐹‘𝑔)〉}))} | |
| 4 | tfrlemi1.4 | . . . 4 ⊢ (𝜑 → 𝑥 ∈ On) | |
| 5 | tfrlemi1.5 | . . . 4 ⊢ (𝜑 → ∀𝑧 ∈ 𝑥 ∃𝑔(𝑔 Fn 𝑧 ∧ ∀𝑤 ∈ 𝑧 (𝑔‘𝑤) = (𝐹‘(𝑔 ↾ 𝑤)))) | |
| 6 | 1, 2, 3, 4, 5 | tfrlemibfn 6424 | . . 3 ⊢ (𝜑 → ∪ 𝐵 Fn 𝑥) |
| 7 | vex 2776 | . . 3 ⊢ 𝑥 ∈ V | |
| 8 | fnex 5816 | . . 3 ⊢ ((∪ 𝐵 Fn 𝑥 ∧ 𝑥 ∈ V) → ∪ 𝐵 ∈ V) | |
| 9 | 6, 7, 8 | sylancl 413 | . 2 ⊢ (𝜑 → ∪ 𝐵 ∈ V) |
| 10 | uniexb 4525 | . 2 ⊢ (𝐵 ∈ V ↔ ∪ 𝐵 ∈ V) | |
| 11 | 9, 10 | sylibr 134 | 1 ⊢ (𝜑 → 𝐵 ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 981 ∀wal 1371 = wceq 1373 ∃wex 1516 ∈ wcel 2177 {cab 2192 ∀wral 2485 ∃wrex 2486 Vcvv 2773 ∪ cun 3166 {csn 3635 〈cop 3638 ∪ cuni 3853 Oncon0 4415 ↾ cres 4682 Fun wfun 5271 Fn wfn 5272 ‘cfv 5277 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-coll 4164 ax-sep 4167 ax-pow 4223 ax-pr 4258 ax-un 4485 ax-setind 4590 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-ral 2490 df-rex 2491 df-reu 2492 df-rab 2494 df-v 2775 df-sbc 3001 df-csb 3096 df-dif 3170 df-un 3172 df-in 3174 df-ss 3181 df-nul 3463 df-pw 3620 df-sn 3641 df-pr 3642 df-op 3644 df-uni 3854 df-iun 3932 df-br 4049 df-opab 4111 df-mpt 4112 df-tr 4148 df-id 4345 df-iord 4418 df-on 4420 df-suc 4423 df-xp 4686 df-rel 4687 df-cnv 4688 df-co 4689 df-dm 4690 df-rn 4691 df-res 4692 df-ima 4693 df-iota 5238 df-fun 5279 df-fn 5280 df-f 5281 df-f1 5282 df-fo 5283 df-f1o 5284 df-fv 5285 df-recs 6401 |
| This theorem is referenced by: tfrlemiex 6427 |
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