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| Mirrors > Home > ILE Home > Th. List > frec2uzsucd | GIF version | ||
| Description: The value of 𝐺 (see frec2uz0d 10757) 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 9609 | . . . . . . 7 ⊢ (𝑧 ∈ ℤ → (𝑧 + 1) ∈ ℤ) | |
| 2 | oveq1 6056 | . . . . . . . 8 ⊢ (𝑥 = 𝑧 → (𝑥 + 1) = (𝑧 + 1)) | |
| 3 | eqid 2232 | . . . . . . . 8 ⊢ (𝑥 ∈ ℤ ↦ (𝑥 + 1)) = (𝑥 ∈ ℤ ↦ (𝑥 + 1)) | |
| 4 | 2, 3 | fvmptg 5752 | . . . . . . 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 2309 | . . . . 5 ⊢ (𝑧 ∈ ℤ → ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘𝑧) ∈ ℤ) |
| 7 | 6 | rgen 2595 | . . . 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 6637 | . . . 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 1379 | . . 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 5670 | . . 3 ⊢ (𝐺‘suc 𝐴) = (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘suc 𝐴) |
| 14 | 12 | fveq1i 5670 | . . . 4 ⊢ (𝐺‘𝐴) = (frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴) |
| 15 | 14 | fveq2i 5672 | . . 3 ⊢ ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴)) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶)‘𝐴)) |
| 16 | 11, 13, 15 | 3eqtr4g 2290 | . 2 ⊢ (𝜑 → (𝐺‘suc 𝐴) = ((𝑥 ∈ ℤ ↦ (𝑥 + 1))‘(𝐺‘𝐴))) |
| 17 | 8, 12, 9 | frec2uzzd 10758 | . . 3 ⊢ (𝜑 → (𝐺‘𝐴) ∈ ℤ) |
| 18 | oveq1 6056 | . . . 4 ⊢ (𝑧 = (𝐺‘𝐴) → (𝑧 + 1) = ((𝐺‘𝐴) + 1)) | |
| 19 | 2 | cbvmptv 4205 | . . . 4 ⊢ (𝑥 ∈ ℤ ↦ (𝑥 + 1)) = (𝑧 ∈ ℤ ↦ (𝑧 + 1)) |
| 20 | 18, 19, 1 | fvmpt3 5755 | . . 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 2265 | 1 ⊢ (𝜑 → (𝐺‘suc 𝐴) = ((𝐺‘𝐴) + 1)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2203 ∀wral 2520 ↦ cmpt 4170 suc csuc 4485 ωcom 4711 ‘cfv 5351 (class class class)co 6049 freccfrec 6620 1c1 8124 + caddc 8126 ℤcz 9573 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4224 ax-sep 4227 ax-nul 4235 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-iinf 4709 ax-cnex 8214 ax-resscn 8215 ax-1cn 8216 ax-1re 8217 ax-icn 8218 ax-addcl 8219 ax-addrcl 8220 ax-mulcl 8221 ax-addcom 8223 ax-addass 8225 ax-distr 8227 ax-i2m1 8228 ax-0id 8231 ax-rnegex 8232 ax-cnre 8234 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-iun 3992 df-br 4109 df-opab 4171 df-mpt 4172 df-tr 4208 df-id 4413 df-iord 4486 df-on 4488 df-ilim 4489 df-suc 4491 df-iom 4712 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-riota 6002 df-ov 6052 df-oprab 6053 df-mpo 6054 df-recs 6535 df-frec 6621 df-sub 8442 df-neg 8443 df-inn 9234 df-n0 9493 df-z 9574 |
| This theorem is referenced by: frec2uzuzd 10760 frec2uzltd 10761 frec2uzrand 10763 frec2uzrdg 10767 frecuzrdgsuc 10772 frecuzrdgg 10774 frecfzennn 10784 1tonninf 10799 omgadd 11161 ennnfonelemkh 13152 ennnfonelemhf1o 13153 ennnfonelemnn0 13162 012of 16754 2o01f 16755 isomninnlem 16801 iswomninnlem 16821 ismkvnnlem 16824 |
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