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| Mirrors > Home > MPE Home > Th. List > norecov | Structured version Visualization version GIF version | ||
| Description: Calculate the value of the surreal recursion operation. (Contributed by Scott Fenton, 19-Aug-2024.) |
| Ref | Expression |
|---|---|
| norec.1 | ⊢ 𝐹 = norec (𝐺) |
| Ref | Expression |
|---|---|
| norecov | ⊢ (𝐴 ∈ No → (𝐹‘𝐴) = (𝐴𝐺(𝐹 ↾ (( L ‘𝐴) ∪ ( R ‘𝐴))))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2765 | . . . . 5 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} = {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} | |
| 2 | 1 | lrrecfr 28165 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Fr No |
| 3 | 1 | lrrecpo 28163 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Po No |
| 4 | 1 | lrrecse 28164 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Se No |
| 5 | 2, 3, 4 | 3pm3.2i 1358 | . . 3 ⊢ ({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Fr No ∧ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Po No ∧ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Se No ) |
| 6 | norec.1 | . . . . 5 ⊢ 𝐹 = norec (𝐺) | |
| 7 | df-norec 28160 | . . . . 5 ⊢ norec (𝐺) = frecs({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐺) | |
| 8 | 6, 7 | eqtri 2788 | . . . 4 ⊢ 𝐹 = frecs({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐺) |
| 9 | 8 | fpr2 8303 | . . 3 ⊢ ((({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Fr No ∧ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Po No ∧ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Se No ) ∧ 𝐴 ∈ No ) → (𝐹‘𝐴) = (𝐴𝐺(𝐹 ↾ Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴)))) |
| 10 | 5, 9 | mpan 703 | . 2 ⊢ (𝐴 ∈ No → (𝐹‘𝐴) = (𝐴𝐺(𝐹 ↾ Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴)))) |
| 11 | 1 | lrrecpred 28166 | . . . 4 ⊢ (𝐴 ∈ No → Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴) = (( L ‘𝐴) ∪ ( R ‘𝐴))) |
| 12 | 11 | reseq2d 5980 | . . 3 ⊢ (𝐴 ∈ No → (𝐹 ↾ Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴)) = (𝐹 ↾ (( L ‘𝐴) ∪ ( R ‘𝐴)))) |
| 13 | 12 | oveq2d 7432 | . 2 ⊢ (𝐴 ∈ No → (𝐴𝐺(𝐹 ↾ Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴))) = (𝐴𝐺(𝐹 ↾ (( L ‘𝐴) ∪ ( R ‘𝐴))))) |
| 14 | 10, 13 | eqtrd 2800 | 1 ⊢ (𝐴 ∈ No → (𝐹‘𝐴) = (𝐴𝐺(𝐹 ↾ (( L ‘𝐴) ∪ ( R ‘𝐴))))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ∪ cun 3904 {copab 5175 Po wpo 5569 Fr wfr 5613 Se wse 5614 ↾ cres 5665 Predcpred 6305 ‘cfv 6540 (class class class)co 7416 frecscfrecs 8279 No csur 27833 L cleft 28047 R cright 28048 norec cnorec 28159 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-se 5617 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-1o 8455 df-2o 8456 df-no 27836 df-lts 27837 df-bday 27838 df-slts 27980 df-cuts 27982 df-made 28049 df-old 28050 df-left 28052 df-right 28053 df-norec 28160 |
| This theorem is used by: negsval 28247 |
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