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Mirrors > Home > MPE Home > Th. List > rdglim | Structured version Visualization version GIF version |
Description: The value of the recursive definition generator at a limit ordinal. (Contributed by NM, 23-Apr-1995.) (Revised by Mario Carneiro, 14-Nov-2014.) |
Ref | Expression |
---|---|
rdglim | ⊢ ((𝐵 ∈ 𝐶 ∧ Lim 𝐵) → (rec(𝐹, 𝐴)‘𝐵) = ∪ (rec(𝐹, 𝐴) “ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | limelon 6453 | . . 3 ⊢ ((𝐵 ∈ 𝐶 ∧ Lim 𝐵) → 𝐵 ∈ On) | |
2 | rdgfnon 8463 | . . . 4 ⊢ rec(𝐹, 𝐴) Fn On | |
3 | fndm 6676 | . . . 4 ⊢ (rec(𝐹, 𝐴) Fn On → dom rec(𝐹, 𝐴) = On) | |
4 | 2, 3 | ax-mp 5 | . . 3 ⊢ dom rec(𝐹, 𝐴) = On |
5 | 1, 4 | eleqtrrdi 2851 | . 2 ⊢ ((𝐵 ∈ 𝐶 ∧ Lim 𝐵) → 𝐵 ∈ dom rec(𝐹, 𝐴)) |
6 | rdglimg 8470 | . 2 ⊢ ((𝐵 ∈ dom rec(𝐹, 𝐴) ∧ Lim 𝐵) → (rec(𝐹, 𝐴)‘𝐵) = ∪ (rec(𝐹, 𝐴) “ 𝐵)) | |
7 | 5, 6 | sylancom 588 | 1 ⊢ ((𝐵 ∈ 𝐶 ∧ Lim 𝐵) → (rec(𝐹, 𝐴)‘𝐵) = ∪ (rec(𝐹, 𝐴) “ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1538 ∈ wcel 2107 ∪ cuni 4913 dom cdm 5690 “ cima 5693 Oncon0 6389 Lim wlim 6390 Fn wfn 6561 ‘cfv 6566 reccrdg 8454 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-rep 5286 ax-sep 5303 ax-nul 5313 ax-pr 5439 ax-un 7758 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1541 df-fal 1551 df-ex 1778 df-nf 1782 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-ral 3061 df-rex 3070 df-reu 3380 df-rab 3435 df-v 3481 df-sbc 3793 df-csb 3910 df-dif 3967 df-un 3969 df-in 3971 df-ss 3981 df-pss 3984 df-nul 4341 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-op 4639 df-uni 4914 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5584 df-eprel 5590 df-po 5598 df-so 5599 df-fr 5642 df-we 5644 df-xp 5696 df-rel 5697 df-cnv 5698 df-co 5699 df-dm 5700 df-rn 5701 df-res 5702 df-ima 5703 df-pred 6326 df-ord 6392 df-on 6393 df-lim 6394 df-suc 6395 df-iota 6519 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-ov 7438 df-2nd 8020 df-frecs 8311 df-wrecs 8342 df-recs 8416 df-rdg 8455 |
This theorem is referenced by: rdglim2 8477 rdgprc 35788 |
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