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| Mirrors > Home > ILE Home > Th. List > tfrfun | GIF version | ||
| Description: Transfinite recursion produces a function. (Contributed by Jim Kingdon, 20-Aug-2021.) |
| Ref | Expression |
|---|---|
| tfrfun | ⊢ Fun recs(𝐹) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2231 | . 2 ⊢ {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝐹‘(𝑓 ↾ 𝑦)))} = {𝑓 ∣ ∃𝑥 ∈ On (𝑓 Fn 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑓‘𝑦) = (𝐹‘(𝑓 ↾ 𝑦)))} | |
| 2 | 1 | tfrlem7 6482 | 1 ⊢ Fun recs(𝐹) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 = wceq 1397 {cab 2217 ∀wral 2510 ∃wrex 2511 Oncon0 4460 ↾ cres 4727 Fun wfun 5320 Fn wfn 5321 ‘cfv 5326 recscrecs 6469 |
| 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-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-setind 4635 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-tr 4188 df-id 4390 df-iord 4463 df-on 4465 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-res 4737 df-iota 5286 df-fun 5328 df-fn 5329 df-fv 5334 df-recs 6470 |
| This theorem is referenced by: tfr1onlembfn 6509 tfr1onlemubacc 6511 tfri1dALT 6516 tfrcllembfn 6522 tfrcllemubacc 6524 tfrcl 6529 frecex 6559 frecfun 6560 frecfcllem 6569 frecsuclem 6571 |
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