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Mirrors > Home > MPE Home > Th. List > gsumprval | Structured version Visualization version GIF version |
Description: Value of the group sum operation over a pair of sequential integers. (Contributed by AV, 14-Dec-2018.) |
Ref | Expression |
---|---|
gsumprval.b | ⊢ 𝐵 = (Base‘𝐺) |
gsumprval.p | ⊢ + = (+g‘𝐺) |
gsumprval.g | ⊢ (𝜑 → 𝐺 ∈ 𝑉) |
gsumprval.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
gsumprval.n | ⊢ (𝜑 → 𝑁 = (𝑀 + 1)) |
gsumprval.f | ⊢ (𝜑 → 𝐹:{𝑀, 𝑁}⟶𝐵) |
Ref | Expression |
---|---|
gsumprval | ⊢ (𝜑 → (𝐺 Σg 𝐹) = ((𝐹‘𝑀) + (𝐹‘𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | gsumprval.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
2 | gsumprval.p | . . 3 ⊢ + = (+g‘𝐺) | |
3 | gsumprval.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ 𝑉) | |
4 | gsumprval.m | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
5 | uzid 12526 | . . . . 5 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀)) | |
6 | 4, 5 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑀 ∈ (ℤ≥‘𝑀)) |
7 | peano2uz 12570 | . . . 4 ⊢ (𝑀 ∈ (ℤ≥‘𝑀) → (𝑀 + 1) ∈ (ℤ≥‘𝑀)) | |
8 | 6, 7 | syl 17 | . . 3 ⊢ (𝜑 → (𝑀 + 1) ∈ (ℤ≥‘𝑀)) |
9 | gsumprval.f | . . . 4 ⊢ (𝜑 → 𝐹:{𝑀, 𝑁}⟶𝐵) | |
10 | fzpr 13240 | . . . . . . 7 ⊢ (𝑀 ∈ ℤ → (𝑀...(𝑀 + 1)) = {𝑀, (𝑀 + 1)}) | |
11 | 4, 10 | syl 17 | . . . . . 6 ⊢ (𝜑 → (𝑀...(𝑀 + 1)) = {𝑀, (𝑀 + 1)}) |
12 | gsumprval.n | . . . . . . . 8 ⊢ (𝜑 → 𝑁 = (𝑀 + 1)) | |
13 | 12 | eqcomd 2744 | . . . . . . 7 ⊢ (𝜑 → (𝑀 + 1) = 𝑁) |
14 | 13 | preq2d 4673 | . . . . . 6 ⊢ (𝜑 → {𝑀, (𝑀 + 1)} = {𝑀, 𝑁}) |
15 | 11, 14 | eqtrd 2778 | . . . . 5 ⊢ (𝜑 → (𝑀...(𝑀 + 1)) = {𝑀, 𝑁}) |
16 | 15 | feq2d 6570 | . . . 4 ⊢ (𝜑 → (𝐹:(𝑀...(𝑀 + 1))⟶𝐵 ↔ 𝐹:{𝑀, 𝑁}⟶𝐵)) |
17 | 9, 16 | mpbird 256 | . . 3 ⊢ (𝜑 → 𝐹:(𝑀...(𝑀 + 1))⟶𝐵) |
18 | 1, 2, 3, 8, 17 | gsumval2 18285 | . 2 ⊢ (𝜑 → (𝐺 Σg 𝐹) = (seq𝑀( + , 𝐹)‘(𝑀 + 1))) |
19 | seqp1 13664 | . . 3 ⊢ (𝑀 ∈ (ℤ≥‘𝑀) → (seq𝑀( + , 𝐹)‘(𝑀 + 1)) = ((seq𝑀( + , 𝐹)‘𝑀) + (𝐹‘(𝑀 + 1)))) | |
20 | 6, 19 | syl 17 | . 2 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘(𝑀 + 1)) = ((seq𝑀( + , 𝐹)‘𝑀) + (𝐹‘(𝑀 + 1)))) |
21 | seq1 13662 | . . . 4 ⊢ (𝑀 ∈ ℤ → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) | |
22 | 4, 21 | syl 17 | . . 3 ⊢ (𝜑 → (seq𝑀( + , 𝐹)‘𝑀) = (𝐹‘𝑀)) |
23 | 13 | fveq2d 6760 | . . 3 ⊢ (𝜑 → (𝐹‘(𝑀 + 1)) = (𝐹‘𝑁)) |
24 | 22, 23 | oveq12d 7273 | . 2 ⊢ (𝜑 → ((seq𝑀( + , 𝐹)‘𝑀) + (𝐹‘(𝑀 + 1))) = ((𝐹‘𝑀) + (𝐹‘𝑁))) |
25 | 18, 20, 24 | 3eqtrd 2782 | 1 ⊢ (𝜑 → (𝐺 Σg 𝐹) = ((𝐹‘𝑀) + (𝐹‘𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2108 {cpr 4560 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 1c1 10803 + caddc 10805 ℤcz 12249 ℤ≥cuz 12511 ...cfz 13168 seqcseq 13649 Basecbs 16840 +gcplusg 16888 Σg cgsu 17068 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-seq 13650 df-0g 17069 df-gsum 17070 |
This theorem is referenced by: gsumpr12val 18288 |
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