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Mirrors > Home > MPE Home > Th. List > frsuc | Structured version Visualization version GIF version |
Description: The successor value resulting from finite recursive definition generation. (Contributed by NM, 15-Oct-1996.) (Revised by Mario Carneiro, 16-Nov-2014.) |
Ref | Expression |
---|---|
frsuc | ⊢ (𝐵 ∈ ω → ((rec(𝐹, 𝐴) ↾ ω)‘suc 𝐵) = (𝐹‘((rec(𝐹, 𝐴) ↾ ω)‘𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rdgdmlim 8455 | . . . . 5 ⊢ Lim dom rec(𝐹, 𝐴) | |
2 | limomss 7891 | . . . . 5 ⊢ (Lim dom rec(𝐹, 𝐴) → ω ⊆ dom rec(𝐹, 𝐴)) | |
3 | 1, 2 | ax-mp 5 | . . . 4 ⊢ ω ⊆ dom rec(𝐹, 𝐴) |
4 | 3 | sseli 3990 | . . 3 ⊢ (𝐵 ∈ ω → 𝐵 ∈ dom rec(𝐹, 𝐴)) |
5 | rdgsucg 8461 | . . 3 ⊢ (𝐵 ∈ dom rec(𝐹, 𝐴) → (rec(𝐹, 𝐴)‘suc 𝐵) = (𝐹‘(rec(𝐹, 𝐴)‘𝐵))) | |
6 | 4, 5 | syl 17 | . 2 ⊢ (𝐵 ∈ ω → (rec(𝐹, 𝐴)‘suc 𝐵) = (𝐹‘(rec(𝐹, 𝐴)‘𝐵))) |
7 | peano2b 7903 | . . 3 ⊢ (𝐵 ∈ ω ↔ suc 𝐵 ∈ ω) | |
8 | fvres 6925 | . . 3 ⊢ (suc 𝐵 ∈ ω → ((rec(𝐹, 𝐴) ↾ ω)‘suc 𝐵) = (rec(𝐹, 𝐴)‘suc 𝐵)) | |
9 | 7, 8 | sylbi 217 | . 2 ⊢ (𝐵 ∈ ω → ((rec(𝐹, 𝐴) ↾ ω)‘suc 𝐵) = (rec(𝐹, 𝐴)‘suc 𝐵)) |
10 | fvres 6925 | . . 3 ⊢ (𝐵 ∈ ω → ((rec(𝐹, 𝐴) ↾ ω)‘𝐵) = (rec(𝐹, 𝐴)‘𝐵)) | |
11 | 10 | fveq2d 6910 | . 2 ⊢ (𝐵 ∈ ω → (𝐹‘((rec(𝐹, 𝐴) ↾ ω)‘𝐵)) = (𝐹‘(rec(𝐹, 𝐴)‘𝐵))) |
12 | 6, 9, 11 | 3eqtr4d 2784 | 1 ⊢ (𝐵 ∈ ω → ((rec(𝐹, 𝐴) ↾ ω)‘suc 𝐵) = (𝐹‘((rec(𝐹, 𝐴) ↾ ω)‘𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1536 ∈ wcel 2105 ⊆ wss 3962 dom cdm 5688 ↾ cres 5690 Lim wlim 6386 suc csuc 6387 ‘cfv 6562 ωcom 7886 reccrdg 8447 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1791 ax-4 1805 ax-5 1907 ax-6 1964 ax-7 2004 ax-8 2107 ax-9 2115 ax-10 2138 ax-11 2154 ax-12 2174 ax-ext 2705 ax-sep 5301 ax-nul 5311 ax-pr 5437 ax-un 7753 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1539 df-fal 1549 df-ex 1776 df-nf 1780 df-sb 2062 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2726 df-clel 2813 df-nfc 2889 df-ne 2938 df-ral 3059 df-rex 3068 df-reu 3378 df-rab 3433 df-v 3479 df-sbc 3791 df-csb 3908 df-dif 3965 df-un 3967 df-in 3969 df-ss 3979 df-pss 3982 df-nul 4339 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4912 df-iun 4997 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5582 df-eprel 5588 df-po 5596 df-so 5597 df-fr 5640 df-we 5642 df-xp 5694 df-rel 5695 df-cnv 5696 df-co 5697 df-dm 5698 df-rn 5699 df-res 5700 df-ima 5701 df-pred 6322 df-ord 6388 df-on 6389 df-lim 6390 df-suc 6391 df-iota 6515 df-fun 6564 df-fn 6565 df-f 6566 df-f1 6567 df-fo 6568 df-f1o 6569 df-fv 6570 df-ov 7433 df-om 7887 df-2nd 8013 df-frecs 8304 df-wrecs 8335 df-recs 8409 df-rdg 8448 |
This theorem is referenced by: frsucmpt 8476 frsucmptn 8477 seqomlem1 8488 seqomlem4 8491 onasuc 8564 onmsuc 8565 onesuc 8566 inf3lemc 9663 alephfplem2 10142 ackbij2lem2 10276 infpssrlem2 10341 fin23lem34 10383 fin23lem35 10384 itunisuc 10456 om2uzrdg 13993 uzrdgsuci 13997 om2noseqrdg 28324 noseqrdgsuc 28328 |
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