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| Mirrors > Home > ILE Home > Th. List > ghmfghm | GIF version | ||
| Description: The function fulfilling the conditions of ghmgrp 13698 is a group homomorphism. (Contributed by Thierry Arnoux, 26-Jan-2020.) |
| Ref | Expression |
|---|---|
| ghmabl.x | ⊢ 𝑋 = (Base‘𝐺) |
| ghmabl.y | ⊢ 𝑌 = (Base‘𝐻) |
| ghmabl.p | ⊢ + = (+g‘𝐺) |
| ghmabl.q | ⊢ ⨣ = (+g‘𝐻) |
| ghmabl.f | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹‘𝑥) ⨣ (𝐹‘𝑦))) |
| ghmabl.1 | ⊢ (𝜑 → 𝐹:𝑋–onto→𝑌) |
| ghmfghm.3 | ⊢ (𝜑 → 𝐺 ∈ Grp) |
| Ref | Expression |
|---|---|
| ghmfghm | ⊢ (𝜑 → 𝐹 ∈ (𝐺 GrpHom 𝐻)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ghmabl.x | . 2 ⊢ 𝑋 = (Base‘𝐺) | |
| 2 | ghmabl.y | . 2 ⊢ 𝑌 = (Base‘𝐻) | |
| 3 | ghmabl.p | . 2 ⊢ + = (+g‘𝐺) | |
| 4 | ghmabl.q | . 2 ⊢ ⨣ = (+g‘𝐻) | |
| 5 | ghmfghm.3 | . 2 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
| 6 | ghmabl.f | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹‘𝑥) ⨣ (𝐹‘𝑦))) | |
| 7 | ghmabl.1 | . . 3 ⊢ (𝜑 → 𝐹:𝑋–onto→𝑌) | |
| 8 | 6, 1, 2, 3, 4, 7, 5 | ghmgrp 13698 | . 2 ⊢ (𝜑 → 𝐻 ∈ Grp) |
| 9 | fof 5556 | . . 3 ⊢ (𝐹:𝑋–onto→𝑌 → 𝐹:𝑋⟶𝑌) | |
| 10 | 7, 9 | syl 14 | . 2 ⊢ (𝜑 → 𝐹:𝑋⟶𝑌) |
| 11 | 6 | 3expb 1228 | . 2 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋)) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹‘𝑥) ⨣ (𝐹‘𝑦))) |
| 12 | 1, 2, 3, 4, 5, 8, 10, 11 | isghmd 13832 | 1 ⊢ (𝜑 → 𝐹 ∈ (𝐺 GrpHom 𝐻)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1002 = wceq 1395 ∈ wcel 2200 ⟶wf 5320 –onto→wfo 5322 ‘cfv 5324 (class class class)co 6013 Basecbs 13075 +gcplusg 13153 Grpcgrp 13576 GrpHom cghm 13820 |
| 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-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8116 ax-resscn 8117 ax-1re 8119 ax-addrcl 8122 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-inn 9137 df-2 9195 df-ndx 13078 df-slot 13079 df-base 13081 df-plusg 13166 df-0g 13334 df-mgm 13432 df-sgrp 13478 df-mnd 13493 df-grp 13579 df-minusg 13580 df-ghm 13821 |
| This theorem is referenced by: (None) |
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