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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 2769 | . 2 ⊢ (𝜑 → (𝑌 + 𝑋) = (𝑋 + 𝑌)) |
| 9 | 1, 2, 3, 4, 5, 6, 8 | grpcominv1 43841 | 1 ⊢ (𝜑 → (𝑌 + (𝑁‘𝑋)) = ((𝑁‘𝑋) + 𝑌)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ‘cfv 6566 (class class class)co 7451 Basecbs 17431 +gcplusg 17472 Grpcgrp 19194 invgcminusg 19195 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-fv 6574 df-riota 7408 df-ov 7454 df-0g 17662 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-grp 19197 df-minusg 19198 |
| This theorem is used by: (None) |
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