| Mathbox for Thierry Arnoux |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > imasghm | Structured version Visualization version GIF version | ||
| Description: Given a function 𝐹 with homomorphic properties, build the image of a group. (Contributed by Thierry Arnoux, 2-Apr-2025.) |
| Ref | Expression |
|---|---|
| imasmhm.b | ⊢ 𝐵 = (Base‘𝑊) |
| imasmhm.f | ⊢ (𝜑 → 𝐹:𝐵⟶𝐶) |
| imasmhm.1 | ⊢ + = (+g‘𝑊) |
| imasmhm.2 | ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵) ∧ (𝑝 ∈ 𝐵 ∧ 𝑞 ∈ 𝐵)) → (((𝐹‘𝑎) = (𝐹‘𝑝) ∧ (𝐹‘𝑏) = (𝐹‘𝑞)) → (𝐹‘(𝑎 + 𝑏)) = (𝐹‘(𝑝 + 𝑞)))) |
| imasghm.w | ⊢ (𝜑 → 𝑊 ∈ Grp) |
| Ref | Expression |
|---|---|
| imasghm | ⊢ (𝜑 → ((𝐹 “s 𝑊) ∈ Grp ∧ 𝐹 ∈ (𝑊 GrpHom (𝐹 “s 𝑊)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqidd 2763 | . . . 4 ⊢ (𝜑 → (𝐹 “s 𝑊) = (𝐹 “s 𝑊)) | |
| 2 | imasmhm.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑊) | |
| 3 | 2 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐵 = (Base‘𝑊)) |
| 4 | imasmhm.1 | . . . . 5 ⊢ + = (+g‘𝑊) | |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (𝜑 → + = (+g‘𝑊)) |
| 6 | imasmhm.f | . . . . 5 ⊢ (𝜑 → 𝐹:𝐵⟶𝐶) | |
| 7 | fimadmfo 6801 | . . . . 5 ⊢ (𝐹:𝐵⟶𝐶 → 𝐹:𝐵–onto→(𝐹 “ 𝐵)) | |
| 8 | 6, 7 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐹:𝐵–onto→(𝐹 “ 𝐵)) |
| 9 | imasmhm.2 | . . . 4 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵) ∧ (𝑝 ∈ 𝐵 ∧ 𝑞 ∈ 𝐵)) → (((𝐹‘𝑎) = (𝐹‘𝑝) ∧ (𝐹‘𝑏) = (𝐹‘𝑞)) → (𝐹‘(𝑎 + 𝑏)) = (𝐹‘(𝑝 + 𝑞)))) | |
| 10 | imasghm.w | . . . 4 ⊢ (𝜑 → 𝑊 ∈ Grp) | |
| 11 | eqid 2762 | . . . 4 ⊢ (0g‘𝑊) = (0g‘𝑊) | |
| 12 | 1, 3, 5, 8, 9, 10, 11 | imasgrp 19128 | . . 3 ⊢ (𝜑 → ((𝐹 “s 𝑊) ∈ Grp ∧ (𝐹‘(0g‘𝑊)) = (0g‘(𝐹 “s 𝑊)))) |
| 13 | 12 | simpld 499 | . 2 ⊢ (𝜑 → (𝐹 “s 𝑊) ∈ Grp) |
| 14 | eqid 2762 | . . 3 ⊢ (Base‘(𝐹 “s 𝑊)) = (Base‘(𝐹 “s 𝑊)) | |
| 15 | eqid 2762 | . . 3 ⊢ (+g‘(𝐹 “s 𝑊)) = (+g‘(𝐹 “s 𝑊)) | |
| 16 | fof 6792 | . . . . 5 ⊢ (𝐹:𝐵–onto→(𝐹 “ 𝐵) → 𝐹:𝐵⟶(𝐹 “ 𝐵)) | |
| 17 | 8, 16 | syl 18 | . . . 4 ⊢ (𝜑 → 𝐹:𝐵⟶(𝐹 “ 𝐵)) |
| 18 | 1, 3, 8, 10 | imasbas 17572 | . . . . 5 ⊢ (𝜑 → (𝐹 “ 𝐵) = (Base‘(𝐹 “s 𝑊))) |
| 19 | 18 | feq3d 6690 | . . . 4 ⊢ (𝜑 → (𝐹:𝐵⟶(𝐹 “ 𝐵) ↔ 𝐹:𝐵⟶(Base‘(𝐹 “s 𝑊)))) |
| 20 | 17, 19 | mpbid 235 | . . 3 ⊢ (𝜑 → 𝐹:𝐵⟶(Base‘(𝐹 “s 𝑊))) |
| 21 | 8, 9, 1, 3, 10, 4, 15 | imasaddval 17592 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → ((𝐹‘𝑥)(+g‘(𝐹 “s 𝑊))(𝐹‘𝑦)) = (𝐹‘(𝑥 + 𝑦))) |
| 22 | 21 | 3expb 1137 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝐹‘𝑥)(+g‘(𝐹 “s 𝑊))(𝐹‘𝑦)) = (𝐹‘(𝑥 + 𝑦))) |
| 23 | 22 | eqcomd 2768 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝐹‘(𝑥 + 𝑦)) = ((𝐹‘𝑥)(+g‘(𝐹 “s 𝑊))(𝐹‘𝑦))) |
| 24 | 2, 14, 4, 15, 10, 13, 20, 23 | isghmd 19301 | . 2 ⊢ (𝜑 → 𝐹 ∈ (𝑊 GrpHom (𝐹 “s 𝑊))) |
| 25 | 13, 24 | jca 520 | 1 ⊢ (𝜑 → ((𝐹 “s 𝑊) ∈ Grp ∧ 𝐹 ∈ (𝑊 GrpHom (𝐹 “s 𝑊)))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 400 ∧ w3a 1102 = wceq 1569 ∈ wcel 2142 “ cima 5663 ⟶wf 6532 –onto→wfo 6534 ‘cfv 6536 (class class class)co 7412 Basecbs 17275 +gcplusg 17316 0gc0g 17498 “s cimas 17564 Grpcgrp 19006 GrpHom cghm 19289 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-er 8692 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9400 df-inf 9401 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 df-9 12316 df-n0 12511 df-z 12598 df-dec 12718 df-uz 12869 df-fz 13542 df-struct 17213 df-slot 17248 df-ndx 17260 df-base 17276 df-plusg 17329 df-mulr 17330 df-sca 17332 df-vsca 17333 df-ip 17334 df-tset 17335 df-ple 17336 df-ds 17338 df-0g 17500 df-imas 17568 df-mgm 18704 df-sgrp 18783 df-mnd 18799 df-grp 19009 df-minusg 19010 df-ghm 19290 |
| This theorem is used by: imaslmhm 33686 |
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