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Mirrors > Home > ILE Home > Th. List > ser3le | GIF version |
Description: Comparison of partial sums of two infinite series of reals. (Contributed by NM, 27-Dec-2005.) (Revised by Jim Kingdon, 23-Apr-2023.) |
Ref | Expression |
---|---|
ser3ge0.1 | ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) |
ser3ge0.2 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ∈ ℝ) |
ser3le.3 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑘) ∈ ℝ) |
serle.4 | ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ≤ (𝐺‘𝑘)) |
Ref | Expression |
---|---|
ser3le | ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ≤ (seq𝑀( + , 𝐺)‘𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ser3ge0.1 | . . . 4 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀)) | |
2 | vex 2729 | . . . . . 6 ⊢ 𝑘 ∈ V | |
3 | ser3le.3 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑘) ∈ ℝ) | |
4 | ser3ge0.2 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ∈ ℝ) | |
5 | 3, 4 | resubcld 8279 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝐺‘𝑘) − (𝐹‘𝑘)) ∈ ℝ) |
6 | fveq2 5486 | . . . . . . . 8 ⊢ (𝑥 = 𝑘 → (𝐺‘𝑥) = (𝐺‘𝑘)) | |
7 | fveq2 5486 | . . . . . . . 8 ⊢ (𝑥 = 𝑘 → (𝐹‘𝑥) = (𝐹‘𝑘)) | |
8 | 6, 7 | oveq12d 5860 | . . . . . . 7 ⊢ (𝑥 = 𝑘 → ((𝐺‘𝑥) − (𝐹‘𝑥)) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
9 | eqid 2165 | . . . . . . 7 ⊢ (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))) = (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))) | |
10 | 8, 9 | fvmptg 5562 | . . . . . 6 ⊢ ((𝑘 ∈ V ∧ ((𝐺‘𝑘) − (𝐹‘𝑘)) ∈ ℝ) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
11 | 2, 5, 10 | sylancr 411 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
12 | 11, 5 | eqeltrd 2243 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) ∈ ℝ) |
13 | elfzuz 9956 | . . . . . . 7 ⊢ (𝑘 ∈ (𝑀...𝑁) → 𝑘 ∈ (ℤ≥‘𝑀)) | |
14 | serle.4 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ≤ (𝐺‘𝑘)) | |
15 | 13, 14 | sylan2 284 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → (𝐹‘𝑘) ≤ (𝐺‘𝑘)) |
16 | 3, 4 | subge0d 8433 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (0 ≤ ((𝐺‘𝑘) − (𝐹‘𝑘)) ↔ (𝐹‘𝑘) ≤ (𝐺‘𝑘))) |
17 | 13, 16 | sylan2 284 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → (0 ≤ ((𝐺‘𝑘) − (𝐹‘𝑘)) ↔ (𝐹‘𝑘) ≤ (𝐺‘𝑘))) |
18 | 15, 17 | mpbird 166 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → 0 ≤ ((𝐺‘𝑘) − (𝐹‘𝑘))) |
19 | 13, 11 | sylan2 284 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
20 | 18, 19 | breqtrrd 4010 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → 0 ≤ ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘)) |
21 | 1, 12, 20 | ser3ge0 10452 | . . 3 ⊢ (𝜑 → 0 ≤ (seq𝑀( + , (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))))‘𝑁)) |
22 | 3 | recnd 7927 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑘) ∈ ℂ) |
23 | 4 | recnd 7927 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ∈ ℂ) |
24 | 1, 22, 23, 11 | ser3sub 10441 | . . 3 ⊢ (𝜑 → (seq𝑀( + , (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))))‘𝑁) = ((seq𝑀( + , 𝐺)‘𝑁) − (seq𝑀( + , 𝐹)‘𝑁))) |
25 | 21, 24 | breqtrd 4008 | . 2 ⊢ (𝜑 → 0 ≤ ((seq𝑀( + , 𝐺)‘𝑁) − (seq𝑀( + , 𝐹)‘𝑁))) |
26 | eqid 2165 | . . . . 5 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
27 | eluzel2 9471 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
28 | 1, 27 | syl 14 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ) |
29 | 26, 28, 3 | serfre 10410 | . . . 4 ⊢ (𝜑 → seq𝑀( + , 𝐺):(ℤ≥‘𝑀)⟶ℝ) |
30 | 29, 1 | ffvelrnd 5621 | . . 3 ⊢ (𝜑 → (seq𝑀( + , 𝐺)‘𝑁) ∈ ℝ) |
31 | 26, 28, 4 | serfre 10410 | . . . 4 ⊢ (𝜑 → seq𝑀( + , 𝐹):(ℤ≥‘𝑀)⟶ℝ) |
32 | 31, 1 | ffvelrnd 5621 | . . 3 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ∈ ℝ) |
33 | 30, 32 | subge0d 8433 | . 2 ⊢ (𝜑 → (0 ≤ ((seq𝑀( + , 𝐺)‘𝑁) − (seq𝑀( + , 𝐹)‘𝑁)) ↔ (seq𝑀( + , 𝐹)‘𝑁) ≤ (seq𝑀( + , 𝐺)‘𝑁))) |
34 | 25, 33 | mpbid 146 | 1 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ≤ (seq𝑀( + , 𝐺)‘𝑁)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 = wceq 1343 ∈ wcel 2136 Vcvv 2726 class class class wbr 3982 ↦ cmpt 4043 ‘cfv 5188 (class class class)co 5842 ℝcr 7752 0cc0 7753 + caddc 7756 ≤ cle 7934 − cmin 8069 ℤcz 9191 ℤ≥cuz 9466 ...cfz 9944 seqcseq 10380 |
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-addcom 7853 ax-addass 7855 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-ltadd 7869 |
This theorem depends on definitions: df-bi 116 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-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-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-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-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-frec 6359 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-inn 8858 df-n0 9115 df-z 9192 df-uz 9467 df-fz 9945 df-fzo 10078 df-seqfrec 10381 |
This theorem is referenced by: iserle 11283 cvgcmpub 11417 |
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