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| Mirrors > Home > MPE Home > Th. List > tfr1ALT | Structured version Visualization version GIF version | ||
| Description: Alternate proof of tfr1 8316 using well-ordered recursion. (Contributed by Scott Fenton, 3-Aug-2020.) (New usage is discouraged.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| tfrALT.1 | ⊢ 𝐹 = recs(𝐺) |
| Ref | Expression |
|---|---|
| tfr1ALT | ⊢ 𝐹 Fn On |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | epweon 7708 | . 2 ⊢ E We On | |
| 2 | epse 5596 | . 2 ⊢ E Se On | |
| 3 | tfrALT.1 | . . . 4 ⊢ 𝐹 = recs(𝐺) | |
| 4 | df-recs 8291 | . . . 4 ⊢ recs(𝐺) = wrecs( E , On, 𝐺) | |
| 5 | 3, 4 | eqtri 2754 | . . 3 ⊢ 𝐹 = wrecs( E , On, 𝐺) |
| 6 | 5 | wfr1 8256 | . 2 ⊢ (( E We On ∧ E Se On) → 𝐹 Fn On) |
| 7 | 1, 2, 6 | mp2an 692 | 1 ⊢ 𝐹 Fn On |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 E cep 5513 Se wse 5565 We wwe 5566 Oncon0 6306 Fn wfn 6476 wrecscwrecs 8241 recscrecs 8290 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5215 ax-sep 5232 ax-nul 5242 ax-pr 5368 ax-un 7668 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-iun 4941 df-br 5090 df-opab 5152 df-mpt 5171 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-se 5568 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-pred 6248 df-ord 6309 df-on 6310 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-ov 7349 df-frecs 8211 df-wrecs 8242 df-recs 8291 |
| This theorem is referenced by: (None) |
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