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| Mirrors > Home > MPE Home > Th. List > rpnnen2lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for rpnnen2 16135. (Contributed by Mario Carneiro, 13-May-2013.) |
| Ref | Expression |
|---|---|
| rpnnen2.1 | ⊢ 𝐹 = (𝑥 ∈ 𝒫 ℕ ↦ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝑥, ((1 / 3)↑𝑛), 0))) |
| Ref | Expression |
|---|---|
| rpnnen2lem1 | ⊢ ((𝐴 ⊆ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐹‘𝐴)‘𝑁) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnex 12134 | . . . . 5 ⊢ ℕ ∈ V | |
| 2 | 1 | elpw2 5273 | . . . 4 ⊢ (𝐴 ∈ 𝒫 ℕ ↔ 𝐴 ⊆ ℕ) |
| 3 | eleq2 2817 | . . . . . . 7 ⊢ (𝑥 = 𝐴 → (𝑛 ∈ 𝑥 ↔ 𝑛 ∈ 𝐴)) | |
| 4 | 3 | ifbid 4500 | . . . . . 6 ⊢ (𝑥 = 𝐴 → if(𝑛 ∈ 𝑥, ((1 / 3)↑𝑛), 0) = if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) |
| 5 | 4 | mpteq2dv 5186 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝑥, ((1 / 3)↑𝑛), 0)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))) |
| 6 | rpnnen2.1 | . . . . 5 ⊢ 𝐹 = (𝑥 ∈ 𝒫 ℕ ↦ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝑥, ((1 / 3)↑𝑛), 0))) | |
| 7 | 1 | mptex 7159 | . . . . 5 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) ∈ V |
| 8 | 5, 6, 7 | fvmpt 6930 | . . . 4 ⊢ (𝐴 ∈ 𝒫 ℕ → (𝐹‘𝐴) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))) |
| 9 | 2, 8 | sylbir 235 | . . 3 ⊢ (𝐴 ⊆ ℕ → (𝐹‘𝐴) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))) |
| 10 | 9 | fveq1d 6824 | . 2 ⊢ (𝐴 ⊆ ℕ → ((𝐹‘𝐴)‘𝑁) = ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))‘𝑁)) |
| 11 | eleq1 2816 | . . . 4 ⊢ (𝑛 = 𝑁 → (𝑛 ∈ 𝐴 ↔ 𝑁 ∈ 𝐴)) | |
| 12 | oveq2 7357 | . . . 4 ⊢ (𝑛 = 𝑁 → ((1 / 3)↑𝑛) = ((1 / 3)↑𝑁)) | |
| 13 | 11, 12 | ifbieq1d 4501 | . . 3 ⊢ (𝑛 = 𝑁 → if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| 14 | eqid 2729 | . . 3 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) | |
| 15 | ovex 7382 | . . . 4 ⊢ ((1 / 3)↑𝑁) ∈ V | |
| 16 | c0ex 11109 | . . . 4 ⊢ 0 ∈ V | |
| 17 | 15, 16 | ifex 4527 | . . 3 ⊢ if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0) ∈ V |
| 18 | 13, 14, 17 | fvmpt 6930 | . 2 ⊢ (𝑁 ∈ ℕ → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))‘𝑁) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| 19 | 10, 18 | sylan9eq 2784 | 1 ⊢ ((𝐴 ⊆ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐹‘𝐴)‘𝑁) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ⊆ wss 3903 ifcif 4476 𝒫 cpw 4551 ↦ cmpt 5173 ‘cfv 6482 (class class class)co 7349 0cc0 11009 1c1 11010 / cdiv 11777 ℕcn 12128 3c3 12184 ↑cexp 13968 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5218 ax-sep 5235 ax-nul 5245 ax-pr 5371 ax-un 7671 ax-cnex 11065 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-mulcl 11071 ax-i2m1 11077 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-ov 7352 df-om 7800 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-nn 12129 |
| This theorem is referenced by: rpnnen2lem3 16125 rpnnen2lem4 16126 rpnnen2lem9 16131 rpnnen2lem10 16132 rpnnen2lem11 16133 |
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