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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 2761 | . . . . 5 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} = {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} | |
| 2 | 1 | lrrecfr 28322 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Fr No |
| 3 | 1 | lrrecpo 28320 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))} Po No |
| 4 | 1 | lrrecse 28321 | . . . 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 28317 | . . . . 5 ⊢ norec (𝐺) = frecs({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐺) | |
| 8 | 6, 7 | eqtri 2784 | . . . 4 ⊢ 𝐹 = frecs({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐺) |
| 9 | 8 | fpr2 8315 | . . 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 28323 | . . . 4 ⊢ (𝐴 ∈ No → Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴) = (( L ‘𝐴) ∪ ( R ‘𝐴))) |
| 12 | 11 | reseq2d 5970 | . . 3 ⊢ (𝐴 ∈ No → (𝐹 ↾ Pred({〈𝑥, 𝑦〉 ∣ 𝑥 ∈ (( L ‘𝑦) ∪ ( R ‘𝑦))}, No , 𝐴)) = (𝐹 ↾ (( L ‘𝐴) ∪ ( R ‘𝐴)))) |
| 13 | 12 | oveq2d 7434 | . 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 2796 | 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 2145 ∪ cun 3897 {copab 5167 Po wpo 5557 Fr wfr 5601 Se wse 5602 ↾ cres 5653 Predcpred 6302 ‘cfv 6537 (class class class)co 7418 frecscfrecs 8291 No csur 27990 L cleft 28204 R cright 28205 norec cnorec 28316 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-1o 8469 df-2o 8470 df-no 27993 df-lts 27994 df-bday 27995 df-slts 28137 df-cuts 28139 df-made 28206 df-old 28207 df-left 28209 df-right 28210 df-norec 28317 |
| This theorem is used by: negsval 28404 |
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