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Mirrors > Home > MPE Home > Th. List > mulg0 | Structured version Visualization version GIF version |
Description: Group multiple (exponentiation) operation at zero. (Contributed by Mario Carneiro, 11-Dec-2014.) |
Ref | Expression |
---|---|
mulg0.b | ⊢ 𝐵 = (Base‘𝐺) |
mulg0.o | ⊢ 0 = (0g‘𝐺) |
mulg0.t | ⊢ · = (.g‘𝐺) |
Ref | Expression |
---|---|
mulg0 | ⊢ (𝑋 ∈ 𝐵 → (0 · 𝑋) = 0 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0z 12376 | . 2 ⊢ 0 ∈ ℤ | |
2 | mulg0.b | . . . 4 ⊢ 𝐵 = (Base‘𝐺) | |
3 | eqid 2736 | . . . 4 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
4 | mulg0.o | . . . 4 ⊢ 0 = (0g‘𝐺) | |
5 | eqid 2736 | . . . 4 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
6 | mulg0.t | . . . 4 ⊢ · = (.g‘𝐺) | |
7 | eqid 2736 | . . . 4 ⊢ seq1((+g‘𝐺), (ℕ × {𝑋})) = seq1((+g‘𝐺), (ℕ × {𝑋})) | |
8 | 2, 3, 4, 5, 6, 7 | mulgval 18749 | . . 3 ⊢ ((0 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (0 · 𝑋) = if(0 = 0, 0 , if(0 < 0, (seq1((+g‘𝐺), (ℕ × {𝑋}))‘0), ((invg‘𝐺)‘(seq1((+g‘𝐺), (ℕ × {𝑋}))‘-0))))) |
9 | eqid 2736 | . . . 4 ⊢ 0 = 0 | |
10 | 9 | iftruei 4472 | . . 3 ⊢ if(0 = 0, 0 , if(0 < 0, (seq1((+g‘𝐺), (ℕ × {𝑋}))‘0), ((invg‘𝐺)‘(seq1((+g‘𝐺), (ℕ × {𝑋}))‘-0)))) = 0 |
11 | 8, 10 | eqtrdi 2792 | . 2 ⊢ ((0 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (0 · 𝑋) = 0 ) |
12 | 1, 11 | mpan 688 | 1 ⊢ (𝑋 ∈ 𝐵 → (0 · 𝑋) = 0 ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 = wceq 1539 ∈ wcel 2104 ifcif 4465 {csn 4565 class class class wbr 5081 × cxp 5598 ‘cfv 6458 (class class class)co 7307 0cc0 10917 1c1 10918 < clt 11055 -cneg 11252 ℕcn 12019 ℤcz 12365 seqcseq 13767 Basecbs 16957 +gcplusg 17007 0gc0g 17195 invgcminusg 18623 .gcmg 18745 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-cnex 10973 ax-resscn 10974 ax-1cn 10975 ax-icn 10976 ax-addcl 10977 ax-addrcl 10978 ax-mulcl 10979 ax-mulrcl 10980 ax-mulcom 10981 ax-addass 10982 ax-mulass 10983 ax-distr 10984 ax-i2m1 10985 ax-1ne0 10986 ax-1rid 10987 ax-rnegex 10988 ax-rrecex 10989 ax-cnre 10990 ax-pre-lttri 10991 ax-pre-lttrn 10992 ax-pre-ltadd 10993 ax-pre-mulgt0 10994 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3286 df-rab 3287 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-1st 7863 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11057 df-mnf 11058 df-xr 11059 df-ltxr 11060 df-le 11061 df-sub 11253 df-neg 11254 df-nn 12020 df-n0 12280 df-z 12366 df-uz 12629 df-seq 13768 df-mulg 18746 |
This theorem is referenced by: mulgnn0gsum 18755 mulgnn0p1 18760 mulgnn0subcl 18762 mulgneg 18767 mulgaddcom 18772 mulginvcom 18773 mulgnn0z 18775 mulgnn0dir 18778 mulgneg2 18782 mulgnn0ass 18784 mhmmulg 18789 submmulg 18792 cycsubm 18866 odid 19191 oddvdsnn0 19197 oddvds 19200 odf1 19214 gexid 19231 mulgnn0di 19472 0cyg 19539 gsumconst 19580 srgmulgass 19812 srgpcomp 19813 srgbinomlem3 19823 srgbinomlem4 19824 srgbinom 19826 mulgass2 19885 lmodvsmmulgdi 20203 cnfldmulg 20675 cnfldexp 20676 assamulgscmlem1 21148 mplcoe3 21284 mplcoe5 21286 mplbas2 21288 psrbagev1 21330 psrbagev1OLD 21331 evlslem3 21335 evlslem1 21337 mhppwdeg 21385 ply1scltm 21497 chfacfscmulgsum 22054 chfacfpmmulgsum 22058 cpmadugsumlemF 22070 tmdmulg 23288 clmmulg 24309 dchrptlem2 26458 xrsmulgzz 31332 ressmulgnn0 31338 omndmul2 31383 omndmul 31385 archirng 31487 archirngz 31488 archiabllem1b 31491 archiabllem2c 31494 freshmansdream 31529 evlsbagval 40312 mhphflem 40321 mhphf 40322 lmodvsmdi 45776 |
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