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| Mirrors > Home > ILE Home > Th. List > frec2uzsucd | GIF version | ||
| Description: The value of 𝐺 (see frec2uz0d 10651) at a successor. (Contributed by Jim Kingdon, 16-May-2020.) |
| Ref | Expression |
|---|---|
| frec2uz.1 | ⊢ (𝜑 → 𝐶 ∈ ℤ) |
| frec2uz.2 | ⊢ 𝐺 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶) |
| frec2uzzd.a | ⊢ (𝜑 → 𝐴 ∈ ω) |
| Ref | Expression |
|---|---|
| frec2uzsucd | ⊢ (𝜑 → (𝐺‘suc 𝐴) = ((𝐺‘𝐴) + 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | peano2z 9505 | . . . . . . 7 ⊢ (𝑧 ∈ ℤ → (𝑧 + 1) ∈ ℤ) | |
| 2 | oveq1 6020 | . . . . . . . 8 ⊢ (𝑥 = 𝑧 → (𝑥 + 1) = (𝑧 + 1)) | |
| 3 | eqid 2229 | . . . . . . . 8 ⊢ (𝑥 ∈ ℤ ↦ (𝑥 + 1)) = (𝑥 ∈ ℤ ↦ (𝑥 + 1)) | |
| 4 | 2, 3 | fvmptg 5718 | . . . . . . 7 ⊢ ((𝑧 ∈ ℤ ∧ (𝑧 + 1) ∈ ℤ) → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) = (𝑧 + 1)) |
| 5 | 1, 4 | mpdan 421 | . . . . . 6 ⊢ (𝑧 ∈ ℤ → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) = (𝑧 + 1)) |
| 6 | 5, 1 | eqeltrd 2306 | . . . . 5 ⊢ (𝑧 ∈ ℤ → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) ∈ ℤ) |
| 7 | 6 | rgen 2583 | . . . 4 ⊢ ∀𝑧 ∈ ℤ ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) ∈ ℤ |
| 8 | frec2uz.1 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ ℤ) | |
| 9 | frec2uzzd.a | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ω) | |
| 10 | frecsuc 6568 | . . . 4 ⊢ ((∀𝑧 ∈ ℤ ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) ∈ ℤ ∧ 𝐶 ∈ ℤ ∧ 𝐴 ∈ ω) → (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘suc 𝐴) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴))) | |
| 11 | 7, 8, 9, 10 | mp3an2i 1376 | . . 3 ⊢ (𝜑 → (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘suc 𝐴) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴))) |
| 12 | frec2uz.2 | . . . 4 ⊢ 𝐺 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶) | |
| 13 | 12 | fveq1i 5636 | . . 3 ⊢ (𝐺‘suc 𝐴) = (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘suc 𝐴) |
| 14 | 12 | fveq1i 5636 | . . . 4 ⊢ (𝐺‘𝐴) = (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴) |
| 15 | 14 | fveq2i 5638 | . . 3 ⊢ ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴)) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴)) |
| 16 | 11, 13, 15 | 3eqtr4g 2287 | . 2 ⊢ (𝜑 → (𝐺‘suc 𝐴) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴))) |
| 17 | 8, 12, 9 | frec2uzzd 10652 | . . 3 ⊢ (𝜑 → (𝐺‘𝐴) ∈ ℤ) |
| 18 | oveq1 6020 | . . . 4 ⊢ (𝑧 = (𝐺‘𝐴) → (𝑧 + 1) = ((𝐺‘𝐴) + 1)) | |
| 19 | 2 | cbvmptv 4183 | . . . 4 ⊢ (𝑥 ∈ ℤ ↦ (𝑥 + 1)) = (𝑧 ∈ ℤ ↦ (𝑧 + 1)) |
| 20 | 18, 19, 1 | fvmpt3 5721 | . . 3 ⊢ ((𝐺‘𝐴) ∈ ℤ → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴)) = ((𝐺‘𝐴) + 1)) |
| 21 | 17, 20 | syl 14 | . 2 ⊢ (𝜑 → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴)) = ((𝐺‘𝐴) + 1)) |
| 22 | 16, 21 | eqtrd 2262 | 1 ⊢ (𝜑 → (𝐺‘suc 𝐴) = ((𝐺‘𝐴) + 1)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 ∀wral 2508 ↦ cmpt 4148 suc csuc 4460 ωcom 4686 ‘cfv 5324 (class class class)co 6013 freccfrec 6551 1c1 8023 + caddc 8025 ℤcz 9469 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-nul 4213 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-iinf 4684 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-addass 8124 ax-distr 8126 ax-i2m1 8127 ax-0id 8130 ax-rnegex 8131 ax-cnre 8133 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-tr 4186 df-id 4388 df-iord 4461 df-on 4463 df-ilim 4464 df-suc 4466 df-iom 4687 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-recs 6466 df-frec 6552 df-sub 8342 df-neg 8343 df-inn 9134 df-n0 9393 df-z 9470 |
| This theorem is referenced by: frec2uzuzd 10654 frec2uzltd 10655 frec2uzrand 10657 frec2uzrdg 10661 frecuzrdgsuc 10666 frecuzrdgg 10668 frecfzennn 10678 1tonninf 10693 omgadd 11055 ennnfonelemkh 13023 ennnfonelemhf1o 13024 ennnfonelemnn0 13033 012of 16528 2o01f 16529 isomninnlem 16570 iswomninnlem 16589 ismkvnnlem 16592 |
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