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| Mirrors > Home > MPE Home > Th. List > gsumz | Structured version Visualization version GIF version | ||
| Description: Value of a group sum over the zero element. (Contributed by Mario Carneiro, 7-Dec-2014.) |
| Ref | Expression |
|---|---|
| gsumz.z | ⊢ 0 = (0g‘𝐺) |
| Ref | Expression |
|---|---|
| gsumz | ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 0 )) = 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2769 | . 2 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | gsumz.z | . 2 ⊢ 0 = (0g‘𝐺) | |
| 3 | eqid 2769 | . 2 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 4 | eqid 2769 | . 2 ⊢ {𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)} = {𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)} | |
| 5 | simpl 487 | . 2 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) → 𝐺 ∈ Mnd) | |
| 6 | simpr 489 | . 2 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) → 𝐴 ∈ 𝑉) | |
| 7 | 2 | fvexi 6896 | . . . . . 6 ⊢ 0 ∈ V |
| 8 | 7 | snid 4633 | . . . . 5 ⊢ 0 ∈ { 0 } |
| 9 | 1, 2, 3, 4 | gsumvallem2 18892 | . . . . 5 ⊢ (𝐺 ∈ Mnd → {𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)} = { 0 }) |
| 10 | 8, 9 | eleqtrrid 2876 | . . . 4 ⊢ (𝐺 ∈ Mnd → 0 ∈ {𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)}) |
| 11 | 10 | ad2antrr 738 | . . 3 ⊢ (((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) ∧ 𝑘 ∈ 𝐴) → 0 ∈ {𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)}) |
| 12 | 11 | fmpttd 7111 | . 2 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) → (𝑘 ∈ 𝐴 ↦ 0 ):𝐴⟶{𝑥 ∈ (Base‘𝐺) ∣ ∀𝑦 ∈ (Base‘𝐺)((𝑥(+g‘𝐺)𝑦) = 𝑦 ∧ (𝑦(+g‘𝐺)𝑥) = 𝑦)}) |
| 13 | 1, 2, 3, 4, 5, 6, 12 | gsumval1 18740 | 1 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ 𝑉) → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 0 )) = 0 ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 ∀wral 3085 {crab 3423 {csn 4594 ↦ cmpt 5196 ‘cfv 6537 (class class class)co 7411 Basecbs 17268 +gcplusg 17309 0gc0g 17491 Σg cgsu 17492 Mndcmnd 18791 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-seq 14037 df-0g 17493 df-gsum 17494 df-mgm 18697 df-sgrp 18776 df-mnd 18792 |
| This theorem is referenced by: gsumval3 19976 gsumzres 19978 gsumzcl2 19979 gsumzf1o 19981 gsumzaddlem 19990 gsumzmhm 20006 gsumzoppg 20013 gsum2d 20041 dprdfeq0 20093 dprddisj2 20110 freshmansdream 21692 mplsubrglem 22121 evlslem1 22201 mhpsclcl 22278 mhpmulcl 22280 coe1tmmul2 22405 coe1tmmul 22406 cply1mul 22424 gsummoncoe1 22436 dmatmul 22622 smadiadetlem1a 22788 cpmatmcllem 22843 mp2pm2mplem4 22934 chfacfscmulgsum 22985 chfacfpmmulgsum 22989 tsms0 24267 tgptsmscls 24275 tdeglem4 26185 mdegmullem 26203 dchrptlem3 27395 gsummptres 33312 gsummptres2 33313 gsumfs2d 33321 suppgsumssiun 33332 elrgspnlem1 33502 elrgspnsubrunlem2 33508 elrspunidl 33679 rprmdvdsprod 33768 evl1deg1 33810 evl1deg2 33811 evl1deg3 33812 mplmulmvr 33873 esplyfval1 33907 lbsdiflsp0 33960 fedgmullem2 33964 extdgfialglem2 34027 esum0 34383 ply1mulgsumlem2 49051 lincvalsc0 49085 linc0scn0 49087 |
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