esumsup - Mathbox for Thierry Arnoux

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Theorem esumsup 34086

Description: Express an extended sum as a supremum of extended sums. (Contributed by Thierry Arnoux, 24-May-2020.)

**Hypotheses**
Ref	Expression
esumsup.1	⊢ (𝜑 → 𝐵 ∈ (0[,]+∞))
esumsup.2	⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ (0[,]+∞))

**Assertion**
Ref	Expression
esumsup	⊢ (𝜑 → Σ^𝑘 ∈ ℕ𝐴 = sup(ran (𝑛 ∈ ℕ ↦ Σ^𝑘 ∈ (1...𝑛)𝐴), ℝ^*, < ))

Distinct variable groups: 𝐴,𝑛 𝐵,𝑛 𝑘,𝑛,𝜑 Allowed substitution hints: 𝐴(𝑘) 𝐵(𝑘)

**Proof of Theorem esumsup**
Step	Hyp	Ref	Expression
1		esumsup.2	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ (0[,]+∞))
2	1	fmpttd 7090	. . 3 ⊢ (𝜑 → (𝑘 ∈ ℕ ↦ 𝐴):ℕ⟶(0[,]+∞))
3		nfmpt1 5209	. . . 4 ⊢ Ⅎ𝑘(𝑘 ∈ ℕ ↦ 𝐴)
4	3	esumfsup 34067	. . 3 ⊢ ((𝑘 ∈ ℕ ↦ 𝐴):ℕ⟶(0[,]+∞) → Σ^𝑘 ∈ ℕ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = sup(ran seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)), ℝ^, < ))
5	2, 4	syl 17	. 2 ⊢ (𝜑 → Σ^𝑘 ∈ ℕ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = sup(ran seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)), ℝ^, < ))
6		simpr 484	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ)
7		eqid 2730	. . . . 5 ⊢ (𝑘 ∈ ℕ ↦ 𝐴) = (𝑘 ∈ ℕ ↦ 𝐴)
8	7	fvmpt2 6982	. . . 4 ⊢ ((𝑘 ∈ ℕ ∧ 𝐴 ∈ (0[,]+∞)) → ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = 𝐴)
9	6, 1, 8	syl2anc 584	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = 𝐴)
10	9	esumeq2dv 34035	. 2 ⊢ (𝜑 → Σ^𝑘 ∈ ℕ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = Σ^𝑘 ∈ ℕ𝐴)
11		1z 12570	. . . . . . . . 9 ⊢ 1 ∈ ℤ
12		seqfn 13985	. . . . . . . . 9 ⊢ (1 ∈ ℤ → seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn (ℤ_≥‘1))
13	11, 12	ax-mp 5	. . . . . . . 8 ⊢ seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn (ℤ_≥‘1)
14		nnuz 12843	. . . . . . . . 9 ⊢ ℕ = (ℤ_≥‘1)
15	14	fneq2i 6619	. . . . . . . 8 ⊢ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn ℕ ↔ seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn (ℤ_≥‘1))
16	13, 15	mpbir 231	. . . . . . 7 ⊢ seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn ℕ
17		nfcv 2892	. . . . . . . 8 ⊢ Ⅎ𝑛seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))
18	17	dffn5f 6935	. . . . . . 7 ⊢ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) Fn ℕ ↔ seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) = (𝑛 ∈ ℕ ↦ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛)))
19	16, 18	mpbi 230	. . . . . 6 ⊢ seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) = (𝑛 ∈ ℕ ↦ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛))
20	19	a1i 11	. . . . 5 ⊢ (𝜑 → seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) = (𝑛 ∈ ℕ ↦ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛)))
21		fz1ssnn 13523	. . . . . . . . . . 11 ⊢ (1...𝑛) ⊆ ℕ
22	21	a1i 11	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (1...𝑛) ⊆ ℕ)
23	22	sselda 3949	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑛)) → 𝑘 ∈ ℕ)
24		simpll 766	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑛)) → 𝜑)
25	24, 23, 1	syl2anc 584	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑛)) → 𝐴 ∈ (0[,]+∞))
26	23, 25, 8	syl2anc 584	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (1...𝑛)) → ((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = 𝐴)
27	26	esumeq2dv 34035	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → Σ^𝑘 ∈ (1...𝑛)((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = Σ^𝑘 ∈ (1...𝑛)𝐴)
28	3	esumfzf 34066	. . . . . . . 8 ⊢ (((𝑘 ∈ ℕ ↦ 𝐴):ℕ⟶(0[,]+∞) ∧ 𝑛 ∈ ℕ) → Σ^*𝑘 ∈ (1...𝑛)((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛))
29	2, 28	sylan 580	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → Σ^*𝑘 ∈ (1...𝑛)((𝑘 ∈ ℕ ↦ 𝐴)‘𝑘) = (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛))
30	27, 29	eqtr3d 2767	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → Σ^*𝑘 ∈ (1...𝑛)𝐴 = (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛))
31	30	mpteq2dva 5203	. . . . 5 ⊢ (𝜑 → (𝑛 ∈ ℕ ↦ Σ^*𝑘 ∈ (1...𝑛)𝐴) = (𝑛 ∈ ℕ ↦ (seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴))‘𝑛)))
32	20, 31	eqtr4d 2768	. . . 4 ⊢ (𝜑 → seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) = (𝑛 ∈ ℕ ↦ Σ^*𝑘 ∈ (1...𝑛)𝐴))
33	32	rneqd 5905	. . 3 ⊢ (𝜑 → ran seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)) = ran (𝑛 ∈ ℕ ↦ Σ^*𝑘 ∈ (1...𝑛)𝐴))
34	33	supeq1d 9404	. 2 ⊢ (𝜑 → sup(ran seq1( +_𝑒 , (𝑘 ∈ ℕ ↦ 𝐴)), ℝ^, < ) = sup(ran (𝑛 ∈ ℕ ↦ Σ^𝑘 ∈ (1...𝑛)𝐴), ℝ^*, < ))
35	5, 10, 34	3eqtr3d 2773	1 ⊢ (𝜑 → Σ^𝑘 ∈ ℕ𝐴 = sup(ran (𝑛 ∈ ℕ ↦ Σ^𝑘 ∈ (1...𝑛)𝐴), ℝ^*, < ))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ⊆ wss 3917 ↦ cmpt 5191 ran crn 5642 Fn wfn 6509 ⟶wf 6510 ‘cfv 6514 (class class class)co 7390 supcsup 9398 0cc0 11075 1c1 11076 +∞cpnf 11212 ℝ^*cxr 11214 < clt 11215 ℕcn 12193 ℤcz 12536 ℤ_≥cuz 12800 +_𝑒 cxad 13077 [,]cicc 13316 ...cfz 13475 seqcseq 13973 Σ^*cesum 34024

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-inf2 9601 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 ax-pre-sup 11153 ax-addf 11154 ax-mulf 11155

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-tp 4597 df-op 4599 df-uni 4875 df-int 4914 df-iun 4960 df-iin 4961 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-se 5595 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-isom 6523 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-of 7656 df-om 7846 df-1st 7971 df-2nd 7972 df-supp 8143 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-1o 8437 df-2o 8438 df-er 8674 df-map 8804 df-pm 8805 df-ixp 8874 df-en 8922 df-dom 8923 df-sdom 8924 df-fin 8925 df-fsupp 9320 df-fi 9369 df-sup 9400 df-inf 9401 df-oi 9470 df-card 9899 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-div 11843 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-5 12259 df-6 12260 df-7 12261 df-8 12262 df-9 12263 df-n0 12450 df-z 12537 df-dec 12657 df-uz 12801 df-q 12915 df-rp 12959 df-xneg 13079 df-xadd 13080 df-xmul 13081 df-ioo 13317 df-ioc 13318 df-ico 13319 df-icc 13320 df-fz 13476 df-fzo 13623 df-fl 13761 df-mod 13839 df-seq 13974 df-exp 14034 df-fac 14246 df-bc 14275 df-hash 14303 df-shft 15040 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-limsup 15444 df-clim 15461 df-rlim 15462 df-sum 15660 df-ef 16040 df-sin 16042 df-cos 16043 df-pi 16045 df-struct 17124 df-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-ress 17208 df-plusg 17240 df-mulr 17241 df-starv 17242 df-sca 17243 df-vsca 17244 df-ip 17245 df-tset 17246 df-ple 17247 df-ds 17249 df-unif 17250 df-hom 17251 df-cco 17252 df-rest 17392 df-topn 17393 df-0g 17411 df-gsum 17412 df-topgen 17413 df-pt 17414 df-prds 17417 df-ordt 17471 df-xrs 17472 df-qtop 17477 df-imas 17478 df-xps 17480 df-mre 17554 df-mrc 17555 df-acs 17557 df-ps 18532 df-tsr 18533 df-plusf 18573 df-mgm 18574 df-sgrp 18653 df-mnd 18669 df-mhm 18717 df-submnd 18718 df-grp 18875 df-minusg 18876 df-sbg 18877 df-mulg 19007 df-subg 19062 df-cntz 19256 df-cmn 19719 df-abl 19720 df-mgp 20057 df-rng 20069 df-ur 20098 df-ring 20151 df-cring 20152 df-subrng 20462 df-subrg 20486 df-abv 20725 df-lmod 20775 df-scaf 20776 df-sra 21087 df-rgmod 21088 df-psmet 21263 df-xmet 21264 df-met 21265 df-bl 21266 df-mopn 21267 df-fbas 21268 df-fg 21269 df-cnfld 21272 df-top 22788 df-topon 22805 df-topsp 22827 df-bases 22840 df-cld 22913 df-ntr 22914 df-cls 22915 df-nei 22992 df-lp 23030 df-perf 23031 df-cn 23121 df-cnp 23122 df-haus 23209 df-tx 23456 df-hmeo 23649 df-fil 23740 df-fm 23832 df-flim 23833 df-flf 23834 df-tmd 23966 df-tgp 23967 df-tsms 24021 df-trg 24054 df-xms 24215 df-ms 24216 df-tms 24217 df-nm 24477 df-ngp 24478 df-nrg 24480 df-nlm 24481 df-ii 24777 df-cncf 24778 df-limc 25774 df-dv 25775 df-log 26472 df-esum 34025

This theorem is referenced by: esumgect 34087

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