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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 2771 | . 2 ⊢ (𝜑 → (𝑌 + 𝑋) = (𝑋 + 𝑌)) |
| 9 | 1, 2, 3, 4, 5, 6, 8 | grpcominv1 43142 | 1 ⊢ (𝜑 → (𝑌 + (𝑁‘𝑋)) = ((𝑁‘𝑋) + 𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1563 ∈ wcel 2145 ‘cfv 6525 (class class class)co 7400 Basecbs 17259 +gcplusg 17300 Grpcgrp 18990 invgcminusg 18991 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-fv 6533 df-riota 7357 df-ov 7403 df-0g 17484 df-mgm 18688 df-sgrp 18767 df-mnd 18783 df-grp 18993 df-minusg 18994 |
| This theorem is referenced by: (None) |
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