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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 2767 | . 2 ⊢ (𝜑 → (𝑌 + 𝑋) = (𝑋 + 𝑌)) |
| 9 | 1, 2, 3, 4, 5, 6, 8 | grpcominv1 43555 | 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 2145 ‘cfv 6537 (class class class)co 7418 Basecbs 17380 +gcplusg 17421 Grpcgrp 19137 invgcminusg 19138 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 |
| 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 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-fv 6545 df-riota 7375 df-ov 7421 df-0g 17605 df-mgm 18809 df-sgrp 18901 df-mnd 18917 df-grp 19140 df-minusg 19141 |
| This theorem is used by: (None) |
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