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Mirrors > Home > MPE Home > Th. List > iserabs | Structured version Visualization version GIF version |
Description: Generalized triangle inequality: the absolute value of an infinite sum is less than or equal to the sum of absolute values. (Contributed by Paul Chapman, 10-Sep-2007.) (Revised by Mario Carneiro, 27-May-2014.) |
Ref | Expression |
---|---|
iserabs.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
iserabs.2 | ⊢ (𝜑 → seq𝑀( + , 𝐹) ⇝ 𝐴) |
iserabs.3 | ⊢ (𝜑 → seq𝑀( + , 𝐺) ⇝ 𝐵) |
iserabs.5 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
iserabs.6 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ) |
iserabs.7 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) = (abs‘(𝐹‘𝑘))) |
Ref | Expression |
---|---|
iserabs | ⊢ (𝜑 → (abs‘𝐴) ≤ 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iserabs.1 | . 2 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
2 | iserabs.5 | . 2 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
3 | iserabs.2 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐹) ⇝ 𝐴) | |
4 | 1 | fvexi 6731 | . . . . 5 ⊢ 𝑍 ∈ V |
5 | 4 | mptex 7039 | . . . 4 ⊢ (𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚))) ∈ V |
6 | 5 | a1i 11 | . . 3 ⊢ (𝜑 → (𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚))) ∈ V) |
7 | iserabs.6 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ) | |
8 | 1, 2, 7 | serf 13604 | . . . 4 ⊢ (𝜑 → seq𝑀( + , 𝐹):𝑍⟶ℂ) |
9 | 8 | ffvelrnda 6904 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (seq𝑀( + , 𝐹)‘𝑛) ∈ ℂ) |
10 | 2fveq3 6722 | . . . . 5 ⊢ (𝑚 = 𝑛 → (abs‘(seq𝑀( + , 𝐹)‘𝑚)) = (abs‘(seq𝑀( + , 𝐹)‘𝑛))) | |
11 | eqid 2737 | . . . . 5 ⊢ (𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚))) = (𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚))) | |
12 | fvex 6730 | . . . . 5 ⊢ (abs‘(seq𝑀( + , 𝐹)‘𝑛)) ∈ V | |
13 | 10, 11, 12 | fvmpt 6818 | . . . 4 ⊢ (𝑛 ∈ 𝑍 → ((𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚)))‘𝑛) = (abs‘(seq𝑀( + , 𝐹)‘𝑛))) |
14 | 13 | adantl 485 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚)))‘𝑛) = (abs‘(seq𝑀( + , 𝐹)‘𝑛))) |
15 | 1, 3, 6, 2, 9, 14 | climabs 15165 | . 2 ⊢ (𝜑 → (𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚))) ⇝ (abs‘𝐴)) |
16 | iserabs.3 | . 2 ⊢ (𝜑 → seq𝑀( + , 𝐺) ⇝ 𝐵) | |
17 | 9 | abscld 15000 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (abs‘(seq𝑀( + , 𝐹)‘𝑛)) ∈ ℝ) |
18 | 14, 17 | eqeltrd 2838 | . 2 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚)))‘𝑛) ∈ ℝ) |
19 | iserabs.7 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) = (abs‘(𝐹‘𝑘))) | |
20 | 7 | abscld 15000 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (abs‘(𝐹‘𝑘)) ∈ ℝ) |
21 | 19, 20 | eqeltrd 2838 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) ∈ ℝ) |
22 | 1, 2, 21 | serfre 13605 | . . 3 ⊢ (𝜑 → seq𝑀( + , 𝐺):𝑍⟶ℝ) |
23 | 22 | ffvelrnda 6904 | . 2 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (seq𝑀( + , 𝐺)‘𝑛) ∈ ℝ) |
24 | simpr 488 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑛 ∈ 𝑍) | |
25 | 24, 1 | eleqtrdi 2848 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑛 ∈ (ℤ≥‘𝑀)) |
26 | elfzuz 13108 | . . . . . . 7 ⊢ (𝑘 ∈ (𝑀...𝑛) → 𝑘 ∈ (ℤ≥‘𝑀)) | |
27 | 26, 1 | eleqtrrdi 2849 | . . . . . 6 ⊢ (𝑘 ∈ (𝑀...𝑛) → 𝑘 ∈ 𝑍) |
28 | 27, 7 | sylan2 596 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑛)) → (𝐹‘𝑘) ∈ ℂ) |
29 | 28 | adantlr 715 | . . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ 𝑍) ∧ 𝑘 ∈ (𝑀...𝑛)) → (𝐹‘𝑘) ∈ ℂ) |
30 | 27, 19 | sylan2 596 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑛)) → (𝐺‘𝑘) = (abs‘(𝐹‘𝑘))) |
31 | 30 | adantlr 715 | . . . 4 ⊢ (((𝜑 ∧ 𝑛 ∈ 𝑍) ∧ 𝑘 ∈ (𝑀...𝑛)) → (𝐺‘𝑘) = (abs‘(𝐹‘𝑘))) |
32 | 25, 29, 31 | seqabs 15378 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (abs‘(seq𝑀( + , 𝐹)‘𝑛)) ≤ (seq𝑀( + , 𝐺)‘𝑛)) |
33 | 14, 32 | eqbrtrd 5075 | . 2 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ (abs‘(seq𝑀( + , 𝐹)‘𝑚)))‘𝑛) ≤ (seq𝑀( + , 𝐺)‘𝑛)) |
34 | 1, 2, 15, 16, 18, 23, 33 | climle 15201 | 1 ⊢ (𝜑 → (abs‘𝐴) ≤ 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2110 Vcvv 3408 class class class wbr 5053 ↦ cmpt 5135 ‘cfv 6380 (class class class)co 7213 ℂcc 10727 ℝcr 10728 + caddc 10732 ≤ cle 10868 ℤcz 12176 ℤ≥cuz 12438 ...cfz 13095 seqcseq 13574 abscabs 14797 ⇝ cli 15045 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-inf2 9256 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-int 4860 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-se 5510 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-isom 6389 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-1o 8202 df-er 8391 df-pm 8511 df-en 8627 df-dom 8628 df-sdom 8629 df-fin 8630 df-sup 9058 df-inf 9059 df-oi 9126 df-card 9555 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-div 11490 df-nn 11831 df-2 11893 df-3 11894 df-n0 12091 df-z 12177 df-uz 12439 df-rp 12587 df-fz 13096 df-fzo 13239 df-fl 13367 df-seq 13575 df-exp 13636 df-hash 13897 df-cj 14662 df-re 14663 df-im 14664 df-sqrt 14798 df-abs 14799 df-clim 15049 df-rlim 15050 df-sum 15250 |
This theorem is referenced by: eftlub 15670 abelthlem7 25330 |
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