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| Mirrors > Home > MPE Home > Th. List > gsummptfzsplitl | Structured version Visualization version GIF version | ||
| Description: Split a group sum expressed as mapping with a finite set of sequential integers as domain into two parts, , extracting a singleton from the left. (Contributed by AV, 7-Nov-2019.) |
| Ref | Expression |
|---|---|
| gsummptfzsplit.b | ⊢ 𝐵 = (Base‘𝐺) |
| gsummptfzsplit.p | ⊢ + = (+g‘𝐺) |
| gsummptfzsplit.g | ⊢ (𝜑 → 𝐺 ∈ CMnd) |
| gsummptfzsplit.n | ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
| gsummptfzsplitl.y | ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑌 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| gsummptfzsplitl | ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ (0...𝑁) ↦ 𝑌)) = ((𝐺 Σg (𝑘 ∈ (1...𝑁) ↦ 𝑌)) + (𝐺 Σg (𝑘 ∈ {0} ↦ 𝑌)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gsummptfzsplit.b | . 2 ⊢ 𝐵 = (Base‘𝐺) | |
| 2 | gsummptfzsplit.p | . 2 ⊢ + = (+g‘𝐺) | |
| 3 | gsummptfzsplit.g | . 2 ⊢ (𝜑 → 𝐺 ∈ CMnd) | |
| 4 | fzfid 14146 | . 2 ⊢ (𝜑 → (0...𝑁) ∈ Fin) | |
| 5 | gsummptfzsplitl.y | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ (0...𝑁)) → 𝑌 ∈ 𝐵) | |
| 6 | incom 4109 | . . . 4 ⊢ ((1...𝑁) ∩ {0}) = ({0} ∩ (1...𝑁)) | |
| 7 | 6 | a1i 11 | . . 3 ⊢ (𝜑 → ((1...𝑁) ∩ {0}) = ({0} ∩ (1...𝑁))) |
| 8 | 1e0p1 12891 | . . . . . 6 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq1i 7456 | . . . . 5 ⊢ (1...𝑁) = ((0 + 1)...𝑁) |
| 10 | 9 | a1i 11 | . . . 4 ⊢ (𝜑 → (1...𝑁) = ((0 + 1)...𝑁)) |
| 11 | 10 | ineq2d 4120 | . . 3 ⊢ (𝜑 → ({0} ∩ (1...𝑁)) = ({0} ∩ ((0 + 1)...𝑁))) |
| 12 | gsummptfzsplit.n | . . . 4 ⊢ (𝜑 → 𝑁 ∈ ℕ0) | |
| 13 | elnn0uz 13036 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 ↔ 𝑁 ∈ (ℤ≥‘0)) | |
| 14 | 13 | biimpi 219 | . . . 4 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ (ℤ≥‘0)) |
| 15 | fzpreddisj 13737 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘0) → ({0} ∩ ((0 + 1)...𝑁)) = ∅) | |
| 16 | 12, 14, 15 | 3syl 19 | . . 3 ⊢ (𝜑 → ({0} ∩ ((0 + 1)...𝑁)) = ∅) |
| 17 | 7, 11, 16 | 3eqtrd 2802 | . 2 ⊢ (𝜑 → ((1...𝑁) ∩ {0}) = ∅) |
| 18 | fzpred 13736 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘0) → (0...𝑁) = ({0} ∪ ((0 + 1)...𝑁))) | |
| 19 | 12, 14, 18 | 3syl 19 | . . 3 ⊢ (𝜑 → (0...𝑁) = ({0} ∪ ((0 + 1)...𝑁))) |
| 20 | uncom 4160 | . . . 4 ⊢ ({0} ∪ ((0 + 1)...𝑁)) = (((0 + 1)...𝑁) ∪ {0}) | |
| 21 | 0p1e1 12493 | . . . . . 6 ⊢ (0 + 1) = 1 | |
| 22 | 21 | oveq1i 7456 | . . . . 5 ⊢ ((0 + 1)...𝑁) = (1...𝑁) |
| 23 | 22 | uneq1i 4166 | . . . 4 ⊢ (((0 + 1)...𝑁) ∪ {0}) = ((1...𝑁) ∪ {0}) |
| 24 | 20, 23 | eqtri 2786 | . . 3 ⊢ ({0} ∪ ((0 + 1)...𝑁)) = ((1...𝑁) ∪ {0}) |
| 25 | 19, 24 | eqtrdi 2814 | . 2 ⊢ (𝜑 → (0...𝑁) = ((1...𝑁) ∪ {0})) |
| 26 | 1, 2, 3, 4, 5, 17, 25 | gsummptfidmsplit 20177 | 1 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ (0...𝑁) ↦ 𝑌)) = ((𝐺 Σg (𝑘 ∈ (1...𝑁) ↦ 𝑌)) + (𝐺 Σg (𝑘 ∈ {0} ↦ 𝑌)))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ∩ cin 4092 ∪ cun 4152 ∅c0 4281 {csn 4588 ↦ cmpt 5190 ‘cfv 6561 (class class class)co 7446 0cc0 11230 1c1 11231 + caddc 11233 ℕ0cn0 12636 ℤ≥cuz 12995 ...cfz 13669 Basecbs 17419 +gcplusg 17460 Σg cgsu 17643 CMndccmn 20027 |
| 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 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 |
| 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 4839 df-uni 4871 df-int 4911 df-iun 4956 df-iin 4957 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-se 5610 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-isom 6570 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-of 7720 df-om 7905 df-1st 8028 df-2nd 8029 df-supp 8208 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-1o 8507 df-2o 8508 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-fin 9008 df-fsupp 9385 df-oi 9534 df-card 10050 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-nn 12366 df-2 12435 df-n0 12637 df-z 12724 df-uz 12996 df-fz 13670 df-fzo 13819 df-seq 14175 df-hash 14505 df-sets 17374 df-slot 17392 df-ndx 17404 df-base 17420 df-ress 17441 df-plusg 17473 df-0g 17644 df-gsum 17645 df-mre 17788 df-mrc 17789 df-acs 17791 df-mgm 18848 df-sgrp 18940 df-mnd 18956 df-submnd 19011 df-cntz 19564 df-cmn 20029 |
| This theorem is used by: srgbinomlem4 20488 freshmansdream 21913 chfacfscmulgsum 23211 chfacfpmmulgsum 23215 cpmadugsumlemF 23227 |
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