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| Mirrors > Home > MPE Home > Th. List > ruclem4 | Structured version Visualization version GIF version | ||
| Description: Lemma for ruc 16276. Initial value of the interval sequence. (Contributed by Mario Carneiro, 28-May-2014.) |
| Ref | Expression |
|---|---|
| ruc.1 | ⊢ (𝜑 → 𝐹:ℕ⟶ℝ) |
| ruc.2 | ⊢ (𝜑 → 𝐷 = (𝑥 ∈ (ℝ × ℝ), 𝑦 ∈ ℝ ↦ ⦋(((1st ‘𝑥) + (2nd ‘𝑥)) / 2) / 𝑚⦌if(𝑚 < 𝑦, 〈(1st ‘𝑥), 𝑚〉, 〈((𝑚 + (2nd ‘𝑥)) / 2), (2nd ‘𝑥)〉))) |
| ruc.4 | ⊢ 𝐶 = ({〈0, 〈0, 1〉〉} ∪ 𝐹) |
| ruc.5 | ⊢ 𝐺 = seq0(𝐷, 𝐶) |
| Ref | Expression |
|---|---|
| ruclem4 | ⊢ (𝜑 → (𝐺‘0) = 〈0, 1〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ruc.5 | . . 3 ⊢ 𝐺 = seq0(𝐷, 𝐶) | |
| 2 | 1 | fveq1i 6869 | . 2 ⊢ (𝐺‘0) = (seq0(𝐷, 𝐶)‘0) |
| 3 | 0z 12580 | . . 3 ⊢ 0 ∈ ℤ | |
| 4 | ruc.4 | . . . . . 6 ⊢ 𝐶 = ({〈0, 〈0, 1〉〉} ∪ 𝐹) | |
| 5 | ruc.1 | . . . . . . . . 9 ⊢ (𝜑 → 𝐹:ℕ⟶ℝ) | |
| 6 | ffn 6692 | . . . . . . . . 9 ⊢ (𝐹:ℕ⟶ℝ → 𝐹 Fn ℕ) | |
| 7 | fnresdm 6641 | . . . . . . . . 9 ⊢ (𝐹 Fn ℕ → (𝐹 ↾ ℕ) = 𝐹) | |
| 8 | 5, 6, 7 | 3syl 18 | . . . . . . . 8 ⊢ (𝜑 → (𝐹 ↾ ℕ) = 𝐹) |
| 9 | dfn2 12495 | . . . . . . . . 9 ⊢ ℕ = (ℕ0 ∖ {0}) | |
| 10 | 9 | reseq2i 5963 | . . . . . . . 8 ⊢ (𝐹 ↾ ℕ) = (𝐹 ↾ (ℕ0 ∖ {0})) |
| 11 | 8, 10 | eqtr3di 2813 | . . . . . . 7 ⊢ (𝜑 → 𝐹 = (𝐹 ↾ (ℕ0 ∖ {0}))) |
| 12 | 11 | uneq2d 4122 | . . . . . 6 ⊢ (𝜑 → ({〈0, 〈0, 1〉〉} ∪ 𝐹) = ({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0})))) |
| 13 | 4, 12 | eqtrid 2810 | . . . . 5 ⊢ (𝜑 → 𝐶 = ({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0})))) |
| 14 | 13 | fveq1d 6870 | . . . 4 ⊢ (𝜑 → (𝐶‘0) = (({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0})))‘0)) |
| 15 | c0ex 11174 | . . . . . . 7 ⊢ 0 ∈ V | |
| 16 | 15 | a1i 11 | . . . . . 6 ⊢ (⊤ → 0 ∈ V) |
| 17 | opex 5432 | . . . . . . 7 ⊢ 〈0, 1〉 ∈ V | |
| 18 | 17 | a1i 11 | . . . . . 6 ⊢ (⊤ → 〈0, 1〉 ∈ V) |
| 19 | eqid 2763 | . . . . . 6 ⊢ ({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0}))) = ({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0}))) | |
| 20 | 16, 18, 19 | fvsnun1 7167 | . . . . 5 ⊢ (⊤ → (({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0})))‘0) = 〈0, 1〉) |
| 21 | 20 | mptru 1568 | . . . 4 ⊢ (({〈0, 〈0, 1〉〉} ∪ (𝐹 ↾ (ℕ0 ∖ {0})))‘0) = 〈0, 1〉 |
| 22 | 14, 21 | eqtrdi 2814 | . . 3 ⊢ (𝜑 → (𝐶‘0) = 〈0, 1〉) |
| 23 | 3, 22 | seq1i 14029 | . 2 ⊢ (𝜑 → (seq0(𝐷, 𝐶)‘0) = 〈0, 1〉) |
| 24 | 2, 23 | eqtrid 2810 | 1 ⊢ (𝜑 → (𝐺‘0) = 〈0, 1〉) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1561 ⊤wtru 1562 ∈ wcel 2143 Vcvv 3455 ⦋csb 3853 ∖ cdif 3902 ∪ cun 3903 ifcif 4481 {csn 4583 〈cop 4589 class class class wbr 5101 × cxp 5646 ↾ cres 5650 Fn wfn 6517 ⟶wf 6518 ‘cfv 6522 (class class class)co 7397 ∈ cmpo 7399 1st c1st 7969 2nd c2nd 7970 ℝcr 11073 0cc0 11074 1c1 11075 + caddc 11077 < clt 11217 / cdiv 11845 ℕcn 12211 2c2 12273 ℕ0cn0 12482 seqcseq 14015 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6289 df-ord 6350 df-on 6351 df-lim 6352 df-suc 6353 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-riota 7354 df-ov 7400 df-oprab 7401 df-mpo 7402 df-om 7848 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8382 df-er 8679 df-en 8929 df-dom 8930 df-sdom 8931 df-pnf 11219 df-mnf 11220 df-xr 11221 df-ltxr 11222 df-le 11223 df-sub 11417 df-neg 11418 df-nn 12212 df-n0 12483 df-z 12570 df-uz 12841 df-seq 14016 |
| This theorem is referenced by: ruclem6 16268 ruclem8 16270 ruclem11 16273 |
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