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Mirrors > Home > MPE Home > Th. List > gsumconstf | Structured version Visualization version GIF version |
Description: Sum of a constant series. (Contributed by Thierry Arnoux, 5-Jul-2017.) |
Ref | Expression |
---|---|
gsumconstf.k | ⊢ Ⅎ𝑘𝑋 |
gsumconstf.b | ⊢ 𝐵 = (Base‘𝐺) |
gsumconstf.m | ⊢ · = (.g‘𝐺) |
Ref | Expression |
---|---|
gsumconstf | ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ Fin ∧ 𝑋 ∈ 𝐵) → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = ((♯‘𝐴) · 𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfcv 2900 | . . . 4 ⊢ Ⅎ𝑙𝑋 | |
2 | gsumconstf.k | . . . 4 ⊢ Ⅎ𝑘𝑋 | |
3 | eqidd 2740 | . . . 4 ⊢ (𝑘 = 𝑙 → 𝑋 = 𝑋) | |
4 | 1, 2, 3 | cbvmpt 5132 | . . 3 ⊢ (𝑘 ∈ 𝐴 ↦ 𝑋) = (𝑙 ∈ 𝐴 ↦ 𝑋) |
5 | 4 | oveq2i 7184 | . 2 ⊢ (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = (𝐺 Σg (𝑙 ∈ 𝐴 ↦ 𝑋)) |
6 | gsumconstf.b | . . 3 ⊢ 𝐵 = (Base‘𝐺) | |
7 | gsumconstf.m | . . 3 ⊢ · = (.g‘𝐺) | |
8 | 6, 7 | gsumconst 19176 | . 2 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ Fin ∧ 𝑋 ∈ 𝐵) → (𝐺 Σg (𝑙 ∈ 𝐴 ↦ 𝑋)) = ((♯‘𝐴) · 𝑋)) |
9 | 5, 8 | syl5eq 2786 | 1 ⊢ ((𝐺 ∈ Mnd ∧ 𝐴 ∈ Fin ∧ 𝑋 ∈ 𝐵) → (𝐺 Σg (𝑘 ∈ 𝐴 ↦ 𝑋)) = ((♯‘𝐴) · 𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1088 = wceq 1542 ∈ wcel 2114 Ⅎwnfc 2880 ↦ cmpt 5111 ‘cfv 6340 (class class class)co 7173 Fincfn 8558 ♯chash 13785 Basecbs 16589 Σg cgsu 16820 Mndcmnd 18030 .gcmg 18345 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2711 ax-rep 5155 ax-sep 5168 ax-nul 5175 ax-pow 5233 ax-pr 5297 ax-un 7482 ax-cnex 10674 ax-resscn 10675 ax-1cn 10676 ax-icn 10677 ax-addcl 10678 ax-addrcl 10679 ax-mulcl 10680 ax-mulrcl 10681 ax-mulcom 10682 ax-addass 10683 ax-mulass 10684 ax-distr 10685 ax-i2m1 10686 ax-1ne0 10687 ax-1rid 10688 ax-rnegex 10689 ax-rrecex 10690 ax-cnre 10691 ax-pre-lttri 10692 ax-pre-lttrn 10693 ax-pre-ltadd 10694 ax-pre-mulgt0 10695 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2541 df-eu 2571 df-clab 2718 df-cleq 2731 df-clel 2812 df-nfc 2882 df-ne 2936 df-nel 3040 df-ral 3059 df-rex 3060 df-reu 3061 df-rmo 3062 df-rab 3063 df-v 3401 df-sbc 3682 df-csb 3792 df-dif 3847 df-un 3849 df-in 3851 df-ss 3861 df-pss 3863 df-nul 4213 df-if 4416 df-pw 4491 df-sn 4518 df-pr 4520 df-tp 4522 df-op 4524 df-uni 4798 df-int 4838 df-iun 4884 df-br 5032 df-opab 5094 df-mpt 5112 df-tr 5138 df-id 5430 df-eprel 5435 df-po 5443 df-so 5444 df-fr 5484 df-se 5485 df-we 5486 df-xp 5532 df-rel 5533 df-cnv 5534 df-co 5535 df-dm 5536 df-rn 5537 df-res 5538 df-ima 5539 df-pred 6130 df-ord 6176 df-on 6177 df-lim 6178 df-suc 6179 df-iota 6298 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-isom 6349 df-riota 7130 df-ov 7176 df-oprab 7177 df-mpo 7178 df-om 7603 df-1st 7717 df-2nd 7718 df-supp 7860 df-wrecs 7979 df-recs 8040 df-rdg 8078 df-1o 8134 df-er 8323 df-en 8559 df-dom 8560 df-sdom 8561 df-fin 8562 df-oi 9050 df-card 9444 df-pnf 10758 df-mnf 10759 df-xr 10760 df-ltxr 10761 df-le 10762 df-sub 10953 df-neg 10954 df-nn 11720 df-n0 11980 df-z 12066 df-uz 12328 df-fz 12985 df-fzo 13128 df-seq 13464 df-hash 13786 df-0g 16821 df-gsum 16822 df-mgm 17971 df-sgrp 18020 df-mnd 18031 df-mulg 18346 df-cntz 18568 |
This theorem is referenced by: gsumsnfd 19193 esumcst 31604 |
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