| Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > fsummmodsndifre | Structured version Visualization version GIF version | ||
| Description: A finite sum of summands modulo a positive number with one of its summands removed is a real number. (Contributed by Alexander van der Vekens, 31-Aug-2018.) |
| Ref | Expression |
|---|---|
| fsummmodsndifre | ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → Σ𝑘 ∈ (𝐴 ∖ {𝑋})(𝐵 mod 𝑁) ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | csbeq1a 3847 | . . 3 ⊢ (𝑘 = 𝑥 → (𝐵 mod 𝑁) = ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁)) | |
| 2 | nfcv 2903 | . . 3 ⊢ Ⅎ𝑥(𝐵 mod 𝑁) | |
| 3 | nfcsb1v 3857 | . . 3 ⊢ Ⅎ𝑘⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) | |
| 4 | 1, 2, 3 | cbvsum 15652 | . 2 ⊢ Σ𝑘 ∈ (𝐴 ∖ {𝑋})(𝐵 mod 𝑁) = Σ𝑥 ∈ (𝐴 ∖ {𝑋})⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) |
| 5 | diffi 9103 | . . . 4 ⊢ (𝐴 ∈ Fin → (𝐴 ∖ {𝑋}) ∈ Fin) | |
| 6 | 5 | 3ad2ant1 1140 | . . 3 ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → (𝐴 ∖ {𝑋}) ∈ Fin) |
| 7 | eldifi 4064 | . . . . . . . 8 ⊢ (𝑥 ∈ (𝐴 ∖ {𝑋}) → 𝑥 ∈ 𝐴) | |
| 8 | rspcsbela 4369 | . . . . . . . 8 ⊢ ((𝑥 ∈ 𝐴 ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) | |
| 9 | 7, 8 | sylan 587 | . . . . . . 7 ⊢ ((𝑥 ∈ (𝐴 ∖ {𝑋}) ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) |
| 10 | 9 | expcom 415 | . . . . . 6 ⊢ (∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ → (𝑥 ∈ (𝐴 ∖ {𝑋}) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ)) |
| 11 | 10 | 3ad2ant3 1142 | . . . . 5 ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → (𝑥 ∈ (𝐴 ∖ {𝑋}) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ)) |
| 12 | 11 | imp 408 | . . . 4 ⊢ (((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) ∧ 𝑥 ∈ (𝐴 ∖ {𝑋})) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) |
| 13 | vex 3437 | . . . . . . . . 9 ⊢ 𝑥 ∈ V | |
| 14 | csbov1g 7407 | . . . . . . . . 9 ⊢ (𝑥 ∈ V → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) = (⦋𝑥 / 𝑘⦌𝐵 mod 𝑁)) | |
| 15 | 13, 14 | ax-mp 5 | . . . . . . . 8 ⊢ ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) = (⦋𝑥 / 𝑘⦌𝐵 mod 𝑁) |
| 16 | zre 12523 | . . . . . . . . . 10 ⊢ (⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℝ) | |
| 17 | 16 | adantl 483 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) → ⦋𝑥 / 𝑘⦌𝐵 ∈ ℝ) |
| 18 | nnrp 12949 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ+) | |
| 19 | 18 | adantr 482 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) → 𝑁 ∈ ℝ+) |
| 20 | 17, 19 | modcld 13829 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) → (⦋𝑥 / 𝑘⦌𝐵 mod 𝑁) ∈ ℝ) |
| 21 | 15, 20 | eqeltrid 2845 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ ⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ) → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ) |
| 22 | 21 | ex 414 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ)) |
| 23 | 22 | 3ad2ant2 1141 | . . . . 5 ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → (⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ)) |
| 24 | 23 | adantr 482 | . . . 4 ⊢ (((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) ∧ 𝑥 ∈ (𝐴 ∖ {𝑋})) → (⦋𝑥 / 𝑘⦌𝐵 ∈ ℤ → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ)) |
| 25 | 12, 24 | mpd 15 | . . 3 ⊢ (((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) ∧ 𝑥 ∈ (𝐴 ∖ {𝑋})) → ⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ) |
| 26 | 6, 25 | fsumrecl 15691 | . 2 ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → Σ𝑥 ∈ (𝐴 ∖ {𝑋})⦋𝑥 / 𝑘⦌(𝐵 mod 𝑁) ∈ ℝ) |
| 27 | 4, 26 | eqeltrid 2845 | 1 ⊢ ((𝐴 ∈ Fin ∧ 𝑁 ∈ ℕ ∧ ∀𝑘 ∈ 𝐴 𝐵 ∈ ℤ) → Σ𝑘 ∈ (𝐴 ∖ {𝑋})(𝐵 mod 𝑁) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 ∀wral 3055 Vcvv 3433 ⦋csb 3833 ∖ cdif 3882 {csn 4558 (class class class)co 7360 Fincfn 8887 ℝcr 11032 ℕcn 12169 ℤcz 12519 ℝ+crp 12937 mod cmo 13823 Σcsu 15643 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-inf2 9557 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 ax-pre-sup 11111 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-se 5575 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-isom 6498 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-inf 9350 df-oi 9419 df-card 9858 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-div 11803 df-nn 12170 df-2 12239 df-3 12240 df-n0 12433 df-z 12520 df-uz 12784 df-rp 12938 df-fz 13457 df-fzo 13604 df-fl 13746 df-mod 13824 df-seq 13959 df-exp 14019 df-hash 14288 df-cj 15056 df-re 15057 df-im 15058 df-sqrt 15192 df-abs 15193 df-clim 15445 df-sum 15644 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |