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| Mirrors > Home > MPE Home > Th. List > rhmsubclem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for rhmsubc 20740. (Contributed by AV, 2-Mar-2020.) |
| Ref | Expression |
|---|---|
| rngcrescrhm.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| rngcrescrhm.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| rngcrescrhm.r | ⊢ (𝜑 → 𝑅 = (Ring ∩ 𝑈)) |
| rngcrescrhm.h | ⊢ 𝐻 = ( RingHom ↾ (𝑅 × 𝑅)) |
| Ref | Expression |
|---|---|
| rhmsubclem1 | ⊢ (𝜑 → 𝐻 Fn (𝑅 × 𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2763 | . . 3 ⊢ (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) = (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) | |
| 2 | ovex 7430 | . . . 4 ⊢ (𝑥 GrpHom 𝑦) ∈ V | |
| 3 | 2 | inex1 5274 | . . 3 ⊢ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦))) ∈ V |
| 4 | 1, 3 | fnmpoi 8052 | . 2 ⊢ (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) Fn (𝑅 × 𝑅) |
| 5 | rngcrescrhm.h | . . . . 5 ⊢ 𝐻 = ( RingHom ↾ (𝑅 × 𝑅)) | |
| 6 | 5 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐻 = ( RingHom ↾ (𝑅 × 𝑅))) |
| 7 | dfrhm2 20524 | . . . . . 6 ⊢ RingHom = (𝑥 ∈ Ring, 𝑦 ∈ Ring ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) | |
| 8 | 7 | a1i 11 | . . . . 5 ⊢ (𝜑 → RingHom = (𝑥 ∈ Ring, 𝑦 ∈ Ring ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦))))) |
| 9 | 8 | reseq1d 5965 | . . . 4 ⊢ (𝜑 → ( RingHom ↾ (𝑅 × 𝑅)) = ((𝑥 ∈ Ring, 𝑦 ∈ Ring ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) ↾ (𝑅 × 𝑅))) |
| 10 | rngcrescrhm.r | . . . . . 6 ⊢ (𝜑 → 𝑅 = (Ring ∩ 𝑈)) | |
| 11 | inss1 4189 | . . . . . 6 ⊢ (Ring ∩ 𝑈) ⊆ Ring | |
| 12 | 10, 11 | eqsstrdi 3981 | . . . . 5 ⊢ (𝜑 → 𝑅 ⊆ Ring) |
| 13 | resmpo 7517 | . . . . 5 ⊢ ((𝑅 ⊆ Ring ∧ 𝑅 ⊆ Ring) → ((𝑥 ∈ Ring, 𝑦 ∈ Ring ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) ↾ (𝑅 × 𝑅)) = (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦))))) | |
| 14 | 12, 12, 13 | syl2anc 593 | . . . 4 ⊢ (𝜑 → ((𝑥 ∈ Ring, 𝑦 ∈ Ring ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) ↾ (𝑅 × 𝑅)) = (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦))))) |
| 15 | 6, 9, 14 | 3eqtrd 2802 | . . 3 ⊢ (𝜑 → 𝐻 = (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦))))) |
| 16 | 15 | fneq1d 6615 | . 2 ⊢ (𝜑 → (𝐻 Fn (𝑅 × 𝑅) ↔ (𝑥 ∈ 𝑅, 𝑦 ∈ 𝑅 ↦ ((𝑥 GrpHom 𝑦) ∩ ((mulGrp‘𝑥) MndHom (mulGrp‘𝑦)))) Fn (𝑅 × 𝑅))) |
| 17 | 4, 16 | mpbiri 260 | 1 ⊢ (𝜑 → 𝐻 Fn (𝑅 × 𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1561 ∈ wcel 2143 ∩ cin 3904 ⊆ wss 3905 × cxp 5646 ↾ cres 5650 Fn wfn 6517 ‘cfv 6522 (class class class)co 7397 ∈ cmpo 7399 MndHom cmhm 18816 GrpHom cghm 19254 mulGrpcmgp 20187 Ringcrg 20284 RingHom crh 20519 RngCatcrngc 20667 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6289 df-ord 6350 df-on 6351 df-lim 6352 df-suc 6353 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-riota 7354 df-ov 7400 df-oprab 7401 df-mpo 7402 df-om 7848 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8382 df-er 8679 df-map 8811 df-en 8929 df-dom 8930 df-sdom 8931 df-pnf 11219 df-mnf 11220 df-xr 11221 df-ltxr 11222 df-le 11223 df-sub 11417 df-neg 11418 df-nn 12212 df-2 12281 df-sets 17201 df-slot 17219 df-ndx 17231 df-base 17247 df-plusg 17300 df-0g 17471 df-mhm 18818 df-ghm 19255 df-mgp 20188 df-ur 20233 df-ring 20286 df-rhm 20522 |
| This theorem is referenced by: rhmsubc 20740 |
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