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Mirrors > Home > ILE Home > Th. List > grpidrcan | GIF version |
Description: If right adding an element of a group to an arbitrary element of the group results in this element, the added element is the identity element and vice versa. (Contributed by AV, 15-Mar-2019.) |
Ref | Expression |
---|---|
grpidrcan.b | ⊢ 𝐵 = (Base‘𝐺) |
grpidrcan.p | ⊢ + = (+g‘𝐺) |
grpidrcan.o | ⊢ 0 = (0g‘𝐺) |
Ref | Expression |
---|---|
grpidrcan | ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → ((𝑋 + 𝑍) = 𝑋 ↔ 𝑍 = 0 )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | grpidrcan.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐺) | |
2 | grpidrcan.p | . . . . 5 ⊢ + = (+g‘𝐺) | |
3 | grpidrcan.o | . . . . 5 ⊢ 0 = (0g‘𝐺) | |
4 | 1, 2, 3 | grprid 12948 | . . . 4 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵) → (𝑋 + 0 ) = 𝑋) |
5 | 4 | 3adant3 1019 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → (𝑋 + 0 ) = 𝑋) |
6 | 5 | eqeq2d 2201 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → ((𝑋 + 𝑍) = (𝑋 + 0 ) ↔ (𝑋 + 𝑍) = 𝑋)) |
7 | simp1 999 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → 𝐺 ∈ Grp) | |
8 | simp3 1001 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → 𝑍 ∈ 𝐵) | |
9 | 1, 3 | grpidcl 12945 | . . . 4 ⊢ (𝐺 ∈ Grp → 0 ∈ 𝐵) |
10 | 9 | 3ad2ant1 1020 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → 0 ∈ 𝐵) |
11 | simp2 1000 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
12 | 1, 2 | grplcan 12978 | . . 3 ⊢ ((𝐺 ∈ Grp ∧ (𝑍 ∈ 𝐵 ∧ 0 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵)) → ((𝑋 + 𝑍) = (𝑋 + 0 ) ↔ 𝑍 = 0 )) |
13 | 7, 8, 10, 11, 12 | syl13anc 1251 | . 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → ((𝑋 + 𝑍) = (𝑋 + 0 ) ↔ 𝑍 = 0 )) |
14 | 6, 13 | bitr3d 190 | 1 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵) → ((𝑋 + 𝑍) = 𝑋 ↔ 𝑍 = 0 )) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 105 ∧ w3a 980 = wceq 1364 ∈ wcel 2160 ‘cfv 5231 (class class class)co 5891 Basecbs 12486 +gcplusg 12561 0gc0g 12733 Grpcgrp 12917 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-coll 4133 ax-sep 4136 ax-pow 4189 ax-pr 4224 ax-un 4448 ax-cnex 7921 ax-resscn 7922 ax-1re 7924 ax-addrcl 7927 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ral 2473 df-rex 2474 df-reu 2475 df-rmo 2476 df-rab 2477 df-v 2754 df-sbc 2978 df-csb 3073 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-iun 3903 df-br 4019 df-opab 4080 df-mpt 4081 df-id 4308 df-xp 4647 df-rel 4648 df-cnv 4649 df-co 4650 df-dm 4651 df-rn 4652 df-res 4653 df-ima 4654 df-iota 5193 df-fun 5233 df-fn 5234 df-f 5235 df-f1 5236 df-fo 5237 df-f1o 5238 df-fv 5239 df-riota 5847 df-ov 5894 df-inn 8939 df-2 8997 df-ndx 12489 df-slot 12490 df-base 12492 df-plusg 12574 df-0g 12735 df-mgm 12804 df-sgrp 12837 df-mnd 12850 df-grp 12920 df-minusg 12921 |
This theorem is referenced by: (None) |
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