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Mirrors > Home > ILE Home > Th. List > Mathboxes > nconstwlpolem0 | GIF version |
Description: Lemma for nconstwlpo 14436. If all the terms of the series are zero, so is their sum. (Contributed by Jim Kingdon, 26-Jul-2024.) |
Ref | Expression |
---|---|
nconstwlpolem0.g | ⊢ (𝜑 → 𝐺:ℕ⟶{0, 1}) |
nconstwlpolem0.a | ⊢ 𝐴 = Σ𝑖 ∈ ℕ ((1 / (2↑𝑖)) · (𝐺‘𝑖)) |
nconstwlpolem0.0 | ⊢ (𝜑 → ∀𝑥 ∈ ℕ (𝐺‘𝑥) = 0) |
Ref | Expression |
---|---|
nconstwlpolem0 | ⊢ (𝜑 → 𝐴 = 0) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nconstwlpolem0.a | . . 3 ⊢ 𝐴 = Σ𝑖 ∈ ℕ ((1 / (2↑𝑖)) · (𝐺‘𝑖)) | |
2 | fveqeq2 5519 | . . . . . . 7 ⊢ (𝑥 = 𝑖 → ((𝐺‘𝑥) = 0 ↔ (𝐺‘𝑖) = 0)) | |
3 | nconstwlpolem0.0 | . . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ ℕ (𝐺‘𝑥) = 0) | |
4 | 3 | adantr 276 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ∀𝑥 ∈ ℕ (𝐺‘𝑥) = 0) |
5 | simpr 110 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ) | |
6 | 2, 4, 5 | rspcdva 2846 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝐺‘𝑖) = 0) |
7 | 6 | oveq2d 5884 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = ((1 / (2↑𝑖)) · 0)) |
8 | 2nn 9056 | . . . . . . . . . 10 ⊢ 2 ∈ ℕ | |
9 | 8 | a1i 9 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 2 ∈ ℕ) |
10 | 5 | nnnn0d 9205 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ0) |
11 | 9, 10 | nnexpcld 10648 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (2↑𝑖) ∈ ℕ) |
12 | 11 | nnrecred 8942 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (1 / (2↑𝑖)) ∈ ℝ) |
13 | 12 | recnd 7963 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (1 / (2↑𝑖)) ∈ ℂ) |
14 | 13 | mul01d 8327 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · 0) = 0) |
15 | 7, 14 | eqtrd 2210 | . . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = 0) |
16 | 15 | sumeq2dv 11347 | . . 3 ⊢ (𝜑 → Σ𝑖 ∈ ℕ ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = Σ𝑖 ∈ ℕ 0) |
17 | 1, 16 | eqtrid 2222 | . 2 ⊢ (𝜑 → 𝐴 = Σ𝑖 ∈ ℕ 0) |
18 | 1z 9255 | . . . . 5 ⊢ 1 ∈ ℤ | |
19 | nnuz 9539 | . . . . . 6 ⊢ ℕ = (ℤ≥‘1) | |
20 | 19 | eqimssi 3211 | . . . . 5 ⊢ ℕ ⊆ (ℤ≥‘1) |
21 | elnnuz 9540 | . . . . . . . . 9 ⊢ (𝑗 ∈ ℕ ↔ 𝑗 ∈ (ℤ≥‘1)) | |
22 | 21 | biimpri 133 | . . . . . . . 8 ⊢ (𝑗 ∈ (ℤ≥‘1) → 𝑗 ∈ ℕ) |
23 | 22 | orcd 733 | . . . . . . 7 ⊢ (𝑗 ∈ (ℤ≥‘1) → (𝑗 ∈ ℕ ∨ ¬ 𝑗 ∈ ℕ)) |
24 | df-dc 835 | . . . . . . 7 ⊢ (DECID 𝑗 ∈ ℕ ↔ (𝑗 ∈ ℕ ∨ ¬ 𝑗 ∈ ℕ)) | |
25 | 23, 24 | sylibr 134 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘1) → DECID 𝑗 ∈ ℕ) |
26 | 25 | rgen 2530 | . . . . 5 ⊢ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ |
27 | 18, 20, 26 | 3pm3.2i 1175 | . . . 4 ⊢ (1 ∈ ℤ ∧ ℕ ⊆ (ℤ≥‘1) ∧ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ) |
28 | 27 | orci 731 | . . 3 ⊢ ((1 ∈ ℤ ∧ ℕ ⊆ (ℤ≥‘1) ∧ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ) ∨ ℕ ∈ Fin) |
29 | isumz 11368 | . . 3 ⊢ (((1 ∈ ℤ ∧ ℕ ⊆ (ℤ≥‘1) ∧ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ) ∨ ℕ ∈ Fin) → Σ𝑖 ∈ ℕ 0 = 0) | |
30 | 28, 29 | ax-mp 5 | . 2 ⊢ Σ𝑖 ∈ ℕ 0 = 0 |
31 | 17, 30 | eqtrdi 2226 | 1 ⊢ (𝜑 → 𝐴 = 0) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ∨ wo 708 DECID wdc 834 ∧ w3a 978 = wceq 1353 ∈ wcel 2148 ∀wral 2455 ⊆ wss 3129 {cpr 3592 ⟶wf 5207 ‘cfv 5211 (class class class)co 5868 Fincfn 6733 0cc0 7789 1c1 7790 · cmul 7794 / cdiv 8605 ℕcn 8895 2c2 8946 ℤcz 9229 ℤ≥cuz 9504 ↑cexp 10492 Σcsu 11332 |
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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4115 ax-sep 4118 ax-nul 4126 ax-pow 4171 ax-pr 4205 ax-un 4429 ax-setind 4532 ax-iinf 4583 ax-cnex 7880 ax-resscn 7881 ax-1cn 7882 ax-1re 7883 ax-icn 7884 ax-addcl 7885 ax-addrcl 7886 ax-mulcl 7887 ax-mulrcl 7888 ax-addcom 7889 ax-mulcom 7890 ax-addass 7891 ax-mulass 7892 ax-distr 7893 ax-i2m1 7894 ax-0lt1 7895 ax-1rid 7896 ax-0id 7897 ax-rnegex 7898 ax-precex 7899 ax-cnre 7900 ax-pre-ltirr 7901 ax-pre-ltwlin 7902 ax-pre-lttrn 7903 ax-pre-apti 7904 ax-pre-ltadd 7905 ax-pre-mulgt0 7906 ax-pre-mulext 7907 ax-arch 7908 ax-caucvg 7909 |
This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2739 df-sbc 2963 df-csb 3058 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-nul 3423 df-if 3535 df-pw 3576 df-sn 3597 df-pr 3598 df-op 3600 df-uni 3808 df-int 3843 df-iun 3886 df-br 4001 df-opab 4062 df-mpt 4063 df-tr 4099 df-id 4289 df-po 4292 df-iso 4293 df-iord 4362 df-on 4364 df-ilim 4365 df-suc 4367 df-iom 4586 df-xp 4628 df-rel 4629 df-cnv 4630 df-co 4631 df-dm 4632 df-rn 4633 df-res 4634 df-ima 4635 df-iota 5173 df-fun 5213 df-fn 5214 df-f 5215 df-f1 5216 df-fo 5217 df-f1o 5218 df-fv 5219 df-isom 5220 df-riota 5824 df-ov 5871 df-oprab 5872 df-mpo 5873 df-1st 6134 df-2nd 6135 df-recs 6299 df-irdg 6364 df-frec 6385 df-1o 6410 df-oadd 6414 df-er 6528 df-en 6734 df-dom 6735 df-fin 6736 df-pnf 7971 df-mnf 7972 df-xr 7973 df-ltxr 7974 df-le 7975 df-sub 8107 df-neg 8108 df-reap 8509 df-ap 8516 df-div 8606 df-inn 8896 df-2 8954 df-3 8955 df-4 8956 df-n0 9153 df-z 9230 df-uz 9505 df-q 9596 df-rp 9628 df-fz 9983 df-fzo 10116 df-seqfrec 10419 df-exp 10493 df-ihash 10727 df-cj 10822 df-re 10823 df-im 10824 df-rsqrt 10978 df-abs 10979 df-clim 11258 df-sumdc 11333 |
This theorem is referenced by: nconstwlpolem 14435 |
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