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| Mirrors > Home > MPE Home > Th. List > rpnnen2lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for rpnnen2 16318. (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 12266 | . . . . 5 ⊢ ℕ ∈ V | |
| 2 | 1 | elpw2 5303 | . . . 4 ⊢ (𝐴 ∈ 𝒫 ℕ ↔ 𝐴 ⊆ ℕ) |
| 3 | eleq2 2851 | . . . . . . 7 ⊢ (𝑥 = 𝐴 → (𝑛 ∈ 𝑥 ↔ 𝑛 ∈ 𝐴)) | |
| 4 | 3 | ifbid 4509 | . . . . . 6 ⊢ (𝑥 = 𝐴 → if(𝑛 ∈ 𝑥, ((1 / 3)↑𝑛), 0) = if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) |
| 5 | 4 | mpteq2dv 5203 | . . . . 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 7225 | . . . . 5 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) ∈ V |
| 8 | 5, 6, 7 | fvmpt 6990 | . . . 4 ⊢ (𝐴 ∈ 𝒫 ℕ → (𝐹‘𝐴) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))) |
| 9 | 2, 8 | sylbir 238 | . . 3 ⊢ (𝐴 ⊆ ℕ → (𝐹‘𝐴) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))) |
| 10 | 9 | fveq1d 6884 | . 2 ⊢ (𝐴 ⊆ ℕ → ((𝐹‘𝐴)‘𝑁) = ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))‘𝑁)) |
| 11 | eleq1 2850 | . . . 4 ⊢ (𝑛 = 𝑁 → (𝑛 ∈ 𝐴 ↔ 𝑁 ∈ 𝐴)) | |
| 12 | oveq2 7424 | . . . 4 ⊢ (𝑛 = 𝑁 → ((1 / 3)↑𝑛) = ((1 / 3)↑𝑁)) | |
| 13 | 11, 12 | ifbieq1d 4510 | . . 3 ⊢ (𝑛 = 𝑁 → if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| 14 | eqid 2762 | . . 3 ⊢ (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) = (𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0)) | |
| 15 | ovex 7449 | . . . 4 ⊢ ((1 / 3)↑𝑁) ∈ V | |
| 16 | c0ex 11227 | . . . 4 ⊢ 0 ∈ V | |
| 17 | 15, 16 | ifex 4536 | . . 3 ⊢ if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0) ∈ V |
| 18 | 13, 14, 17 | fvmpt 6990 | . 2 ⊢ (𝑁 ∈ ℕ → ((𝑛 ∈ ℕ ↦ if(𝑛 ∈ 𝐴, ((1 / 3)↑𝑛), 0))‘𝑁) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| 19 | 10, 18 | sylan9eq 2817 | 1 ⊢ ((𝐴 ⊆ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐹‘𝐴)‘𝑁) = if(𝑁 ∈ 𝐴, ((1 / 3)↑𝑁), 0)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ⊆ wss 3902 ifcif 4485 𝒫 cpw 4560 ↦ cmpt 5190 ‘cfv 6537 (class class class)co 7416 0cc0 11127 1c1 11128 / cdiv 11898 ℕcn 12260 3c3 12323 ↑cexp 14127 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-mulcl 11189 ax-i2m1 11195 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-om 7866 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-nn 12261 |
| This theorem is used by: rpnnen2lem3 16308 rpnnen2lem4 16309 rpnnen2lem9 16314 rpnnen2lem10 16315 rpnnen2lem11 16316 |
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