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| Mirrors > Home > ILE Home > Th. List > gsumfzsnfd | GIF version | ||
| Description: Group sum of a singleton, deduction form, using bound-variable hypotheses instead of distinct variable conditions. (Contributed by Mario Carneiro, 19-Dec-2014.) (Revised by Thierry Arnoux, 28-Mar-2018.) (Revised by AV, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| gsumsnd.b | ⊢ 𝐵 = (Base‘𝐺) |
| gsumsnd.g | ⊢ (𝜑 → 𝐺 ∈ Mnd) |
| gsumfzsnd.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| gsumsnd.c | ⊢ (𝜑 → 𝐶 ∈ 𝐵) |
| gsumsnd.s | ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝐴 = 𝐶) |
| gsumsnfd.p | ⊢ Ⅎ𝑘𝜑 |
| gsumsnfd.c | ⊢ Ⅎ𝑘𝐶 |
| Ref | Expression |
|---|---|
| gsumfzsnfd | ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gsumsnfd.p | . . . . 5 ⊢ Ⅎ𝑘𝜑 | |
| 2 | elsni 3709 | . . . . . 6 ⊢ (𝑘 ∈ {𝑀} → 𝑘 = 𝑀) | |
| 3 | gsumsnd.s | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 = 𝑀) → 𝐴 = 𝐶) | |
| 4 | 2, 3 | sylan2 286 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ {𝑀}) → 𝐴 = 𝐶) |
| 5 | 1, 4 | mpteq2da 4201 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ {𝑀} ↦ 𝐴) = (𝑘 ∈ {𝑀} ↦ 𝐶)) |
| 6 | 5 | oveq2d 6068 | . . 3 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐶))) |
| 7 | gsumfzsnd.m | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 8 | fzsn 10406 | . . . . . 6 ⊢ (𝑀 ∈ ℤ → (𝑀...𝑀) = {𝑀}) | |
| 9 | 7, 8 | syl 14 | . . . . 5 ⊢ (𝜑 → (𝑀...𝑀) = {𝑀}) |
| 10 | 9 | mpteq1d 4197 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ (𝑀...𝑀) ↦ 𝐶) = (𝑘 ∈ {𝑀} ↦ 𝐶)) |
| 11 | 10 | oveq2d 6068 | . . 3 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ (𝑀...𝑀) ↦ 𝐶)) = (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐶))) |
| 12 | gsumsnd.g | . . . 4 ⊢ (𝜑 → 𝐺 ∈ Mnd) | |
| 13 | 7 | uzidd 9875 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ (ℤ≥‘𝑀)) |
| 14 | gsumsnd.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝐵) | |
| 15 | gsumsnfd.c | . . . . 5 ⊢ Ⅎ𝑘𝐶 | |
| 16 | gsumsnd.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐺) | |
| 17 | eqid 2234 | . . . . 5 ⊢ (.g‘𝐺) = (.g‘𝐺) | |
| 18 | 15, 16, 17 | gsumfzconstf 14080 | . . . 4 ⊢ ((𝐺 ∈ Mnd ∧ 𝑀 ∈ (ℤ≥‘𝑀) ∧ 𝐶 ∈ 𝐵) → (𝐺 Σg (𝑘 ∈ (𝑀...𝑀) ↦ 𝐶)) = (((𝑀 − 𝑀) + 1)(.g‘𝐺)𝐶)) |
| 19 | 12, 13, 14, 18 | syl3anc 1274 | . . 3 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ (𝑀...𝑀) ↦ 𝐶)) = (((𝑀 − 𝑀) + 1)(.g‘𝐺)𝐶)) |
| 20 | 6, 11, 19 | 3eqtr2d 2273 | . 2 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = (((𝑀 − 𝑀) + 1)(.g‘𝐺)𝐶)) |
| 21 | 7 | zcnd 9707 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
| 22 | 21 | subidd 8577 | . . . . 5 ⊢ (𝜑 → (𝑀 − 𝑀) = 0) |
| 23 | 22 | oveq1d 6067 | . . . 4 ⊢ (𝜑 → ((𝑀 − 𝑀) + 1) = (0 + 1)) |
| 24 | 0p1e1 9356 | . . . 4 ⊢ (0 + 1) = 1 | |
| 25 | 23, 24 | eqtrdi 2283 | . . 3 ⊢ (𝜑 → ((𝑀 − 𝑀) + 1) = 1) |
| 26 | 25 | oveq1d 6067 | . 2 ⊢ (𝜑 → (((𝑀 − 𝑀) + 1)(.g‘𝐺)𝐶) = (1(.g‘𝐺)𝐶)) |
| 27 | 16, 17 | mulg1 13867 | . . 3 ⊢ (𝐶 ∈ 𝐵 → (1(.g‘𝐺)𝐶) = 𝐶) |
| 28 | 14, 27 | syl 14 | . 2 ⊢ (𝜑 → (1(.g‘𝐺)𝐶) = 𝐶) |
| 29 | 20, 26, 28 | 3eqtrd 2271 | 1 ⊢ (𝜑 → (𝐺 Σg (𝑘 ∈ {𝑀} ↦ 𝐴)) = 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 Ⅎwnf 1509 ∈ wcel 2205 Ⅎwnfc 2373 {csn 3691 ↦ cmpt 4173 ‘cfv 5354 (class class class)co 6052 0cc0 8132 1c1 8133 + caddc 8135 − cmin 8449 ℤcz 9582 ℤ≥cuz 9859 ...cfz 10348 Basecbs 13233 Σg cgsu 13491 Mndcmnd 13650 .gcmg 13857 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-nul 4238 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 ax-cnex 8223 ax-resscn 8224 ax-1cn 8225 ax-1re 8226 ax-icn 8227 ax-addcl 8228 ax-addrcl 8229 ax-mulcl 8230 ax-addcom 8232 ax-addass 8234 ax-distr 8236 ax-i2m1 8237 ax-0lt1 8238 ax-0id 8240 ax-rnegex 8241 ax-cnre 8243 ax-pre-ltirr 8244 ax-pre-ltwlin 8245 ax-pre-lttrn 8246 ax-pre-apti 8247 ax-pre-ltadd 8248 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-if 3623 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-tr 4211 df-id 4416 df-iord 4489 df-on 4491 df-ilim 4492 df-suc 4494 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-riota 6005 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-recs 6538 df-frec 6624 df-1o 6649 df-er 6769 df-en 6978 df-fin 6980 df-pnf 8315 df-mnf 8316 df-xr 8317 df-ltxr 8318 df-le 8319 df-sub 8451 df-neg 8452 df-inn 9243 df-2 9301 df-n0 9502 df-z 9583 df-uz 9860 df-fz 10349 df-seqfrec 10817 df-ndx 13236 df-slot 13237 df-base 13239 df-plusg 13324 df-0g 13492 df-igsum 13493 df-minusg 13738 df-mulg 13858 |
| This theorem is referenced by: gsumsplit0 14084 gsumfzfsumlemm 14784 gfsumsn 16916 |
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