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| Mirrors > Home > MPE Home > Th. List > Mathboxes > grpcominv2 | Structured version Visualization version GIF version | ||
| Description: If two elements commute, then they commute with each other's inverses (case of the second element commuting with the inverse of the first element). (Contributed by SN, 1-Feb-2025.) |
| Ref | Expression |
|---|---|
| grpcominv.b | ⊢ 𝐵 = (Base‘𝐺) |
| grpcominv.p | ⊢ + = (+g‘𝐺) |
| grpcominv.n | ⊢ 𝑁 = (invg‘𝐺) |
| grpcominv.g | ⊢ (𝜑 → 𝐺 ∈ Grp) |
| grpcominv.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| grpcominv.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| grpcominv.1 | ⊢ (𝜑 → (𝑋 + 𝑌) = (𝑌 + 𝑋)) |
| Ref | Expression |
|---|---|
| grpcominv2 | ⊢ (𝜑 → (𝑌 + (𝑁‘𝑋)) = ((𝑁‘𝑋) + 𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | grpcominv.b | . 2 ⊢ 𝐵 = (Base‘𝐺) | |
| 2 | grpcominv.p | . 2 ⊢ + = (+g‘𝐺) | |
| 3 | grpcominv.n | . 2 ⊢ 𝑁 = (invg‘𝐺) | |
| 4 | grpcominv.g | . 2 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
| 5 | grpcominv.y | . 2 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 6 | grpcominv.x | . 2 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 7 | grpcominv.1 | . . 3 ⊢ (𝜑 → (𝑋 + 𝑌) = (𝑌 + 𝑋)) | |
| 8 | 7 | eqcomd 2742 | . 2 ⊢ (𝜑 → (𝑌 + 𝑋) = (𝑋 + 𝑌)) |
| 9 | 1, 2, 3, 4, 5, 6, 8 | grpcominv1 42953 | 1 ⊢ (𝜑 → (𝑌 + (𝑁‘𝑋)) = ((𝑁‘𝑋) + 𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ‘cfv 6498 (class class class)co 7367 Basecbs 17179 +gcplusg 17220 Grpcgrp 18909 invgcminusg 18910 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-fv 6506 df-riota 7324 df-ov 7370 df-0g 17404 df-mgm 18608 df-sgrp 18687 df-mnd 18703 df-grp 18912 df-minusg 18913 |
| This theorem is referenced by: (None) |
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