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| Mirrors > Home > MPE Home > Th. List > regsumfsum | Structured version Visualization version GIF version | ||
| Description: Relate a group sum on (ℂfld ↾s ℝ) to a finite sum on the reals. Cf. gsumfsum 21746. (Contributed by Thierry Arnoux, 7-Sep-2018.) |
| Ref | Expression |
|---|---|
| regsumfsum.1 | ⊢ (𝜑 → 𝐴 ∈ Fin) |
| regsumfsum.2 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℝ) |
| Ref | Expression |
|---|---|
| regsumfsum | ⊢ (𝜑 → ((ℂfld ↾s ℝ) Σg (𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnfldbas 21688 | . . 3 ⊢ ℂ = (Base‘ℂfld) | |
| 2 | cnfldadd 21690 | . . 3 ⊢ + = (+g‘ℂfld) | |
| 3 | eqid 2760 | . . 3 ⊢ (ℂfld ↾s ℝ) = (ℂfld ↾s ℝ) | |
| 4 | cnfldex 21687 | . . . 4 ⊢ ℂfld ∈ V | |
| 5 | 4 | a1i 11 | . . 3 ⊢ (𝜑 → ℂfld ∈ V) |
| 6 | regsumfsum.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ Fin) | |
| 7 | ax-resscn 11261 | . . . 4 ⊢ ℝ ⊆ ℂ | |
| 8 | 7 | a1i 11 | . . 3 ⊢ (𝜑 → ℝ ⊆ ℂ) |
| 9 | regsumfsum.2 | . . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℝ) | |
| 10 | 9 | fmpttd 7116 | . . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝐵):𝐴⟶ℝ) |
| 11 | 0red 11315 | . . 3 ⊢ (𝜑 → 0 ∈ ℝ) | |
| 12 | simpr 490 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → 𝑥 ∈ ℂ) | |
| 13 | 12 | addlidd 11515 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → (0 + 𝑥) = 𝑥) |
| 14 | 12 | addridd 11514 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → (𝑥 + 0) = 𝑥) |
| 15 | 13, 14 | jca 521 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ ℂ) → ((0 + 𝑥) = 𝑥 ∧ (𝑥 + 0) = 𝑥)) |
| 16 | 1, 2, 3, 5, 6, 8, 10, 11, 15 | gsumress 18877 | . 2 ⊢ (𝜑 → (ℂfld Σg (𝑘 ∈ 𝐴 ↦ 𝐵)) = ((ℂfld ↾s ℝ) Σg (𝑘 ∈ 𝐴 ↦ 𝐵))) |
| 17 | 9 | recnd 11341 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝐵 ∈ ℂ) |
| 18 | 6, 17 | gsumfsum 21746 | . 2 ⊢ (𝜑 → (ℂfld Σg (𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
| 19 | 16, 18 | eqtr3d 2797 | 1 ⊢ (𝜑 → ((ℂfld ↾s ℝ) Σg (𝑘 ∈ 𝐴 ↦ 𝐵)) = Σ𝑘 ∈ 𝐴 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 Vcvv 3450 ⊆ wss 3895 ↦ cmpt 5185 (class class class)co 7421 Fincfn 8977 ℂcc 11202 ℝcr 11203 0cc0 11204 + caddc 11207 Σcsu 15859 ↾s cress 17414 Σg cgsu 17617 ℂfldccnfld 21684 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-inf2 9646 ax-cnex 11260 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 ax-pre-sup 11282 ax-addf 11283 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-isom 6548 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-1st 8002 df-2nd 8003 df-supp 8181 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-1o 8480 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-fin 8981 df-sup 9438 df-oi 9508 df-card 10024 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-div 11978 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 df-6 12413 df-7 12414 df-8 12415 df-9 12416 df-n0 12611 df-z 12698 df-dec 12819 df-uz 12970 df-rp 13125 df-fz 13644 df-fzo 13793 df-seq 14149 df-exp 14209 df-hash 14479 df-cj 15272 df-re 15273 df-im 15274 df-sqrt 15408 df-abs 15409 df-clim 15661 df-sum 15860 df-struct 17331 df-sets 17348 df-slot 17366 df-ndx 17378 df-base 17394 df-ress 17415 df-plusg 17447 df-mulr 17448 df-starv 17449 df-tset 17453 df-ple 17454 df-ds 17456 df-unif 17457 df-0g 17618 df-gsum 17619 df-mgm 18822 df-sgrp 18914 df-mnd 18930 df-grp 19153 df-minusg 19154 df-cntz 19537 df-cmn 20002 df-abl 20003 df-mgp 20367 df-ur 20414 df-ring 20467 df-cring 20468 df-cnfld 21685 |
| This theorem is used by: rrxdsfi 25738 crosspdotsumlem 51133 |
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