| Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > gsumdifsndf | Structured version Visualization version GIF version | ||
| Description: Extract a summand from a finitely supported group sum. (Contributed by AV, 4-Sep-2019.) |
| Ref | Expression |
|---|---|
| gsumdifsndf.k | ⊢ Ⅎ𝑘𝑌 |
| gsumdifsndf.n | ⊢ Ⅎ𝑘𝜑 |
| gsumdifsndf.b | ⊢ 𝐵 = (Base‘𝐺) |
| gsumdifsndf.p | ⊢ + = (+g‘𝐺) |
| gsumdifsndf.g | ⊢ (𝜑 → 𝐺 ∈ CMnd) |
| gsumdifsndf.a | ⊢ (𝜑 → 𝐴 ∈ 𝑊) |
| gsumdifsndf.f | ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝑋) finSupp (0g‘𝐺)) |
| gsumdifsndf.e | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑋 ∈ 𝐵) |
| gsumdifsndf.m | ⊢ (𝜑 → 𝑀 ∈ 𝐴) |
| gsumdifsndf.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| gsumdifsndf.s | ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝑋 = 𝑌) |
| Ref | Expression |
|---|---|
| gsumdifsndf | ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = ((𝐺 Σg (𝑘 ∈ (𝐴 ∖ {𝑀}) ↦ 𝑋)) + 𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gsumdifsndf.n | . . 3 ⊢ Ⅎ𝑘𝜑 | |
| 2 | gsumdifsndf.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
| 3 | eqid 2763 | . . 3 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 4 | gsumdifsndf.p | . . 3 ⊢ + = (+g‘𝐺) | |
| 5 | gsumdifsndf.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ CMnd) | |
| 6 | gsumdifsndf.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑊) | |
| 7 | gsumdifsndf.e | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑋 ∈ 𝐵) | |
| 8 | gsumdifsndf.f | . . 3 ⊢ (𝜑 → (𝑘 ∈ 𝐴 ↦ 𝑋) finSupp (0g‘𝐺)) | |
| 9 | gsumdifsndf.m | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ 𝐴) | |
| 10 | 9 | snssd 4749 | . . . . 5 ⊢ (𝜑 → {𝑀} ⊆ 𝐴) |
| 11 | difin2 4249 | . . . . 5 ⊢ ({𝑀} ⊆ 𝐴 → ({𝑀} ∖ {𝑀}) = ((𝐴 ∖ {𝑀}) ∩ {𝑀})) | |
| 12 | 10, 11 | syl 18 | . . . 4 ⊢ (𝜑 → ({𝑀} ∖ {𝑀}) = ((𝐴 ∖ {𝑀}) ∩ {𝑀})) |
| 13 | difid 4328 | . . . 4 ⊢ ({𝑀} ∖ {𝑀}) = ∅ | |
| 14 | 12, 13 | eqtr3di 2813 | . . 3 ⊢ (𝜑 → ((𝐴 ∖ {𝑀}) ∩ {𝑀}) = ∅) |
| 15 | difsnid 4773 | . . . . 5 ⊢ (𝑀 ∈ 𝐴 → ((𝐴 ∖ {𝑀}) ∪ {𝑀}) = 𝐴) | |
| 16 | 9, 15 | syl 18 | . . . 4 ⊢ (𝜑 → ((𝐴 ∖ {𝑀}) ∪ {𝑀}) = 𝐴) |
| 17 | 16 | eqcomd 2769 | . . 3 ⊢ (𝜑 → 𝐴 = ((𝐴 ∖ {𝑀}) ∪ {𝑀})) |
| 18 | 1, 2, 3, 4, 5, 6, 7, 8, 14, 17 | gsumsplit2f 49550 | . 2 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = ((𝐺 Σg (𝑘 ∈ (𝐴 ∖ {𝑀}) ↦ 𝑋)) + (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝑋)))) |
| 19 | cmnmnd 20062 | . . . . 5 ⊢ (𝐺 ∈ CMnd → 𝐺 ∈ Mnd) | |
| 20 | 5, 19 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐺 ∈ Mnd) |
| 21 | gsumdifsndf.y | . . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 22 | gsumdifsndf.s | . . . 4 ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝑋 = 𝑌) | |
| 23 | gsumdifsndf.k | . . . 4 ⊢ Ⅎ𝑘𝑌 | |
| 24 | 2, 20, 9, 21, 22, 1, 23 | gsumsnfd 20216 | . . 3 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝑋)) = 𝑌) |
| 25 | 24 | oveq2d 7467 | . 2 ⊢ (𝜑 → ((𝐺 Σg (𝑘 ∈ (𝐴 ∖ {𝑀}) ↦ 𝑋)) + (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝑋))) = ((𝐺 Σg (𝑘 ∈ (𝐴 ∖ {𝑀}) ↦ 𝑋)) + 𝑌)) |
| 26 | 18, 25 | eqtrd 2798 | 1 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = ((𝐺 Σg (𝑘 ∈ (𝐴 ∖ {𝑀}) ↦ 𝑋)) + 𝑌)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 Ⅎwnf 1816 ∈ wcel 2147 Ⅎwnfc 2911 ⊆ wss 3900 ∖ cdif 4048 ∩ cin 4092 ∪ cun 4152 ∅c0 4281 {csn 4588 class class class wbr 5108 ↦ cmpt 5192 ‘cfv 6566 (class class class)co 7451 finSupp cfsupp 9391 Basecbs 17431 +gcplusg 17472 0gc0g 17660 Σg cgsu 17661 Mndcmnd 18973 CMndccmn 20045 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-iin 4959 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-se 5612 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-isom 6575 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-of 7725 df-om 7912 df-1st 8035 df-2nd 8036 df-supp 8215 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-2o 8515 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-fsupp 9392 df-oi 9541 df-card 10057 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-n0 12647 df-z 12734 df-uz 13006 df-fz 13680 df-fzo 13829 df-seq 14185 df-hash 14516 df-sets 17386 df-slot 17404 df-ndx 17416 df-base 17432 df-ress 17453 df-plusg 17486 df-0g 17662 df-gsum 17663 df-mre 17806 df-mrc 17807 df-acs 17809 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-submnd 19029 df-mulg 19328 df-cntz 19582 df-cmn 20047 |
| This theorem is used by: (None) |
| Copyright terms: Public domain | W3C validator |