Mathbox for Jim Kingdon |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > Mathboxes > nconstwlpolem0 | GIF version |
Description: Lemma for nconstwlpo 13944. 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 5495 | . . . . . . 7 ⊢ (𝑥 = 𝑖 → ((𝐺‘𝑥) = 0 ↔ (𝐺‘𝑖) = 0)) | |
3 | nconstwlpolem0.0 | . . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ ℕ (𝐺‘𝑥) = 0) | |
4 | 3 | adantr 274 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ∀𝑥 ∈ ℕ (𝐺‘𝑥) = 0) |
5 | simpr 109 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ) | |
6 | 2, 4, 5 | rspcdva 2835 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝐺‘𝑖) = 0) |
7 | 6 | oveq2d 5858 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = ((1 / (2↑𝑖)) · 0)) |
8 | 2nn 9018 | . . . . . . . . . 10 ⊢ 2 ∈ ℕ | |
9 | 8 | a1i 9 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 2 ∈ ℕ) |
10 | 5 | nnnn0d 9167 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ0) |
11 | 9, 10 | nnexpcld 10610 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (2↑𝑖) ∈ ℕ) |
12 | 11 | nnrecred 8904 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (1 / (2↑𝑖)) ∈ ℝ) |
13 | 12 | recnd 7927 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (1 / (2↑𝑖)) ∈ ℂ) |
14 | 13 | mul01d 8291 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · 0) = 0) |
15 | 7, 14 | eqtrd 2198 | . . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = 0) |
16 | 15 | sumeq2dv 11309 | . . 3 ⊢ (𝜑 → Σ𝑖 ∈ ℕ ((1 / (2↑𝑖)) · (𝐺‘𝑖)) = Σ𝑖 ∈ ℕ 0) |
17 | 1, 16 | syl5eq 2211 | . 2 ⊢ (𝜑 → 𝐴 = Σ𝑖 ∈ ℕ 0) |
18 | 1z 9217 | . . . . 5 ⊢ 1 ∈ ℤ | |
19 | nnuz 9501 | . . . . . 6 ⊢ ℕ = (ℤ≥‘1) | |
20 | 19 | eqimssi 3198 | . . . . 5 ⊢ ℕ ⊆ (ℤ≥‘1) |
21 | elnnuz 9502 | . . . . . . . . 9 ⊢ (𝑗 ∈ ℕ ↔ 𝑗 ∈ (ℤ≥‘1)) | |
22 | 21 | biimpri 132 | . . . . . . . 8 ⊢ (𝑗 ∈ (ℤ≥‘1) → 𝑗 ∈ ℕ) |
23 | 22 | orcd 723 | . . . . . . 7 ⊢ (𝑗 ∈ (ℤ≥‘1) → (𝑗 ∈ ℕ ∨ ¬ 𝑗 ∈ ℕ)) |
24 | df-dc 825 | . . . . . . 7 ⊢ (DECID 𝑗 ∈ ℕ ↔ (𝑗 ∈ ℕ ∨ ¬ 𝑗 ∈ ℕ)) | |
25 | 23, 24 | sylibr 133 | . . . . . 6 ⊢ (𝑗 ∈ (ℤ≥‘1) → DECID 𝑗 ∈ ℕ) |
26 | 25 | rgen 2519 | . . . . 5 ⊢ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ |
27 | 18, 20, 26 | 3pm3.2i 1165 | . . . 4 ⊢ (1 ∈ ℤ ∧ ℕ ⊆ (ℤ≥‘1) ∧ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ) |
28 | 27 | orci 721 | . . 3 ⊢ ((1 ∈ ℤ ∧ ℕ ⊆ (ℤ≥‘1) ∧ ∀𝑗 ∈ (ℤ≥‘1)DECID 𝑗 ∈ ℕ) ∨ ℕ ∈ Fin) |
29 | isumz 11330 | . . 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 2215 | 1 ⊢ (𝜑 → 𝐴 = 0) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ∨ wo 698 DECID wdc 824 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 ∀wral 2444 ⊆ wss 3116 {cpr 3577 ⟶wf 5184 ‘cfv 5188 (class class class)co 5842 Fincfn 6706 0cc0 7753 1c1 7754 · cmul 7758 / cdiv 8568 ℕcn 8857 2c2 8908 ℤcz 9191 ℤ≥cuz 9466 ↑cexp 10454 Σcsu 11294 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-mulrcl 7852 ax-addcom 7853 ax-mulcom 7854 ax-addass 7855 ax-mulass 7856 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-1rid 7860 ax-0id 7861 ax-rnegex 7862 ax-precex 7863 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-apti 7868 ax-pre-ltadd 7869 ax-pre-mulgt0 7870 ax-pre-mulext 7871 ax-arch 7872 ax-caucvg 7873 |
This theorem depends on definitions: df-bi 116 df-dc 825 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rmo 2452 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-if 3521 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-tr 4081 df-id 4271 df-po 4274 df-iso 4275 df-iord 4344 df-on 4346 df-ilim 4347 df-suc 4349 df-iom 4568 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-isom 5197 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-irdg 6338 df-frec 6359 df-1o 6384 df-oadd 6388 df-er 6501 df-en 6707 df-dom 6708 df-fin 6709 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-reap 8473 df-ap 8480 df-div 8569 df-inn 8858 df-2 8916 df-3 8917 df-4 8918 df-n0 9115 df-z 9192 df-uz 9467 df-q 9558 df-rp 9590 df-fz 9945 df-fzo 10078 df-seqfrec 10381 df-exp 10455 df-ihash 10689 df-cj 10784 df-re 10785 df-im 10786 df-rsqrt 10940 df-abs 10941 df-clim 11220 df-sumdc 11295 |
This theorem is referenced by: nconstwlpolem 13943 |
Copyright terms: Public domain | W3C validator |