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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 2733 | . . . . . 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 8300 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝐺‘𝑘) − (𝐹‘𝑘)) ∈ ℝ) |
6 | fveq2 5496 | . . . . . . . 8 ⊢ (𝑥 = 𝑘 → (𝐺‘𝑥) = (𝐺‘𝑘)) | |
7 | fveq2 5496 | . . . . . . . 8 ⊢ (𝑥 = 𝑘 → (𝐹‘𝑥) = (𝐹‘𝑘)) | |
8 | 6, 7 | oveq12d 5871 | . . . . . . 7 ⊢ (𝑥 = 𝑘 → ((𝐺‘𝑥) − (𝐹‘𝑥)) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
9 | eqid 2170 | . . . . . . 7 ⊢ (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))) = (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))) | |
10 | 8, 9 | fvmptg 5572 | . . . . . 6 ⊢ ((𝑘 ∈ V ∧ ((𝐺‘𝑘) − (𝐹‘𝑘)) ∈ ℝ) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
11 | 2, 5, 10 | sylancr 412 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) = ((𝐺‘𝑘) − (𝐹‘𝑘))) |
12 | 11, 5 | eqeltrd 2247 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘) ∈ ℝ) |
13 | elfzuz 9977 | . . . . . . 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 8454 | . . . . . . 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 4017 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑁)) → 0 ≤ ((𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥)))‘𝑘)) |
21 | 1, 12, 20 | ser3ge0 10473 | . . 3 ⊢ (𝜑 → 0 ≤ (seq𝑀( + , (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))))‘𝑁)) |
22 | 3 | recnd 7948 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐺‘𝑘) ∈ ℂ) |
23 | 4 | recnd 7948 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ≥‘𝑀)) → (𝐹‘𝑘) ∈ ℂ) |
24 | 1, 22, 23, 11 | ser3sub 10462 | . . 3 ⊢ (𝜑 → (seq𝑀( + , (𝑥 ∈ V ↦ ((𝐺‘𝑥) − (𝐹‘𝑥))))‘𝑁) = ((seq𝑀( + , 𝐺)‘𝑁) − (seq𝑀( + , 𝐹)‘𝑁))) |
25 | 21, 24 | breqtrd 4015 | . 2 ⊢ (𝜑 → 0 ≤ ((seq𝑀( + , 𝐺)‘𝑁) − (seq𝑀( + , 𝐹)‘𝑁))) |
26 | eqid 2170 | . . . . 5 ⊢ (ℤ≥‘𝑀) = (ℤ≥‘𝑀) | |
27 | eluzel2 9492 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
28 | 1, 27 | syl 14 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ) |
29 | 26, 28, 3 | serfre 10431 | . . . 4 ⊢ (𝜑 → seq𝑀( + , 𝐺):(ℤ≥‘𝑀)⟶ℝ) |
30 | 29, 1 | ffvelrnd 5632 | . . 3 ⊢ (𝜑 → (seq𝑀( + , 𝐺)‘𝑁) ∈ ℝ) |
31 | 26, 28, 4 | serfre 10431 | . . . 4 ⊢ (𝜑 → seq𝑀( + , 𝐹):(ℤ≥‘𝑀)⟶ℝ) |
32 | 31, 1 | ffvelrnd 5632 | . . 3 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑁) ∈ ℝ) |
33 | 30, 32 | subge0d 8454 | . 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 1348 ∈ wcel 2141 Vcvv 2730 class class class wbr 3989 ↦ cmpt 4050 ‘cfv 5198 (class class class)co 5853 ℝcr 7773 0cc0 7774 + caddc 7777 ≤ cle 7955 − cmin 8090 ℤcz 9212 ℤ≥cuz 9487 ...cfz 9965 seqcseq 10401 |
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 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-addass 7876 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-ltadd 7890 |
This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-frec 6370 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-inn 8879 df-n0 9136 df-z 9213 df-uz 9488 df-fz 9966 df-fzo 10099 df-seqfrec 10402 |
This theorem is referenced by: iserle 11305 cvgcmpub 11439 |
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