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Mirrors > Home > MPE Home > Th. List > mulgz | Structured version Visualization version GIF version |
Description: A group multiple of the identity, for integer multiple. (Contributed by Mario Carneiro, 13-Dec-2014.) |
Ref | Expression |
---|---|
mulgnn0z.b | ⊢ 𝐵 = (Base‘𝐺) |
mulgnn0z.t | ⊢ · = (.g‘𝐺) |
mulgnn0z.o | ⊢ 0 = (0g‘𝐺) |
Ref | Expression |
---|---|
mulgz | ⊢ ((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) → (𝑁 · 0 ) = 0 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | grpmnd 18582 | . . . 4 ⊢ (𝐺 ∈ Grp → 𝐺 ∈ Mnd) | |
2 | 1 | adantr 481 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) → 𝐺 ∈ Mnd) |
3 | mulgnn0z.b | . . . 4 ⊢ 𝐵 = (Base‘𝐺) | |
4 | mulgnn0z.t | . . . 4 ⊢ · = (.g‘𝐺) | |
5 | mulgnn0z.o | . . . 4 ⊢ 0 = (0g‘𝐺) | |
6 | 3, 4, 5 | mulgnn0z 18728 | . . 3 ⊢ ((𝐺 ∈ Mnd ∧ 𝑁 ∈ ℕ0) → (𝑁 · 0 ) = 0 ) |
7 | 2, 6 | sylan 580 | . 2 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ 𝑁 ∈ ℕ0) → (𝑁 · 0 ) = 0 ) |
8 | simpll 764 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → 𝐺 ∈ Grp) | |
9 | nn0z 12343 | . . . . 5 ⊢ (-𝑁 ∈ ℕ0 → -𝑁 ∈ ℤ) | |
10 | 9 | adantl 482 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → -𝑁 ∈ ℤ) |
11 | 3, 5 | grpidcl 18605 | . . . . 5 ⊢ (𝐺 ∈ Grp → 0 ∈ 𝐵) |
12 | 11 | ad2antrr 723 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → 0 ∈ 𝐵) |
13 | eqid 2740 | . . . . 5 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
14 | 3, 4, 13 | mulgneg 18720 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ -𝑁 ∈ ℤ ∧ 0 ∈ 𝐵) → (--𝑁 · 0 ) = ((invg‘𝐺)‘(-𝑁 · 0 ))) |
15 | 8, 10, 12, 14 | syl3anc 1370 | . . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → (--𝑁 · 0 ) = ((invg‘𝐺)‘(-𝑁 · 0 ))) |
16 | zcn 12324 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
17 | 16 | ad2antlr 724 | . . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → 𝑁 ∈ ℂ) |
18 | 17 | negnegd 11323 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → --𝑁 = 𝑁) |
19 | 18 | oveq1d 7286 | . . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → (--𝑁 · 0 ) = (𝑁 · 0 )) |
20 | 3, 4, 5 | mulgnn0z 18728 | . . . . . 6 ⊢ ((𝐺 ∈ Mnd ∧ -𝑁 ∈ ℕ0) → (-𝑁 · 0 ) = 0 ) |
21 | 2, 20 | sylan 580 | . . . . 5 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → (-𝑁 · 0 ) = 0 ) |
22 | 21 | fveq2d 6775 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → ((invg‘𝐺)‘(-𝑁 · 0 )) = ((invg‘𝐺)‘ 0 )) |
23 | 5, 13 | grpinvid 18634 | . . . . 5 ⊢ (𝐺 ∈ Grp → ((invg‘𝐺)‘ 0 ) = 0 ) |
24 | 23 | ad2antrr 723 | . . . 4 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → ((invg‘𝐺)‘ 0 ) = 0 ) |
25 | 22, 24 | eqtrd 2780 | . . 3 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → ((invg‘𝐺)‘(-𝑁 · 0 )) = 0 ) |
26 | 15, 19, 25 | 3eqtr3d 2788 | . 2 ⊢ (((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) ∧ -𝑁 ∈ ℕ0) → (𝑁 · 0 ) = 0 ) |
27 | elznn0 12334 | . . . 4 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 ∈ ℕ0 ∨ -𝑁 ∈ ℕ0))) | |
28 | 27 | simprbi 497 | . . 3 ⊢ (𝑁 ∈ ℤ → (𝑁 ∈ ℕ0 ∨ -𝑁 ∈ ℕ0)) |
29 | 28 | adantl 482 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) → (𝑁 ∈ ℕ0 ∨ -𝑁 ∈ ℕ0)) |
30 | 7, 26, 29 | mpjaodan 956 | 1 ⊢ ((𝐺 ∈ Grp ∧ 𝑁 ∈ ℤ) → (𝑁 · 0 ) = 0 ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∨ wo 844 = wceq 1542 ∈ wcel 2110 ‘cfv 6432 (class class class)co 7271 ℂcc 10870 ℝcr 10871 -cneg 11206 ℕ0cn0 12233 ℤcz 12319 Basecbs 16910 0gc0g 17148 Mndcmnd 18383 Grpcgrp 18575 invgcminusg 18576 .gcmg 18698 |
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 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7582 ax-cnex 10928 ax-resscn 10929 ax-1cn 10930 ax-icn 10931 ax-addcl 10932 ax-addrcl 10933 ax-mulcl 10934 ax-mulrcl 10935 ax-mulcom 10936 ax-addass 10937 ax-mulass 10938 ax-distr 10939 ax-i2m1 10940 ax-1ne0 10941 ax-1rid 10942 ax-rnegex 10943 ax-rrecex 10944 ax-cnre 10945 ax-pre-lttri 10946 ax-pre-lttrn 10947 ax-pre-ltadd 10948 ax-pre-mulgt0 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 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 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6201 df-ord 6268 df-on 6269 df-lim 6270 df-suc 6271 df-iota 6390 df-fun 6434 df-fn 6435 df-f 6436 df-f1 6437 df-fo 6438 df-f1o 6439 df-fv 6440 df-riota 7228 df-ov 7274 df-oprab 7275 df-mpo 7276 df-om 7707 df-1st 7824 df-2nd 7825 df-frecs 8088 df-wrecs 8119 df-recs 8193 df-rdg 8232 df-er 8481 df-en 8717 df-dom 8718 df-sdom 8719 df-pnf 11012 df-mnf 11013 df-xr 11014 df-ltxr 11015 df-le 11016 df-sub 11207 df-neg 11208 df-nn 11974 df-n0 12234 df-z 12320 df-uz 12582 df-fz 13239 df-seq 13720 df-0g 17150 df-mgm 18324 df-sgrp 18373 df-mnd 18384 df-grp 18578 df-minusg 18579 df-mulg 18699 |
This theorem is referenced by: mulgmodid 18740 odmod 19152 gexdvdsi 19186 |
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