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| Mirrors > Home > MPE Home > Th. List > pzriprnglem7 | Structured version Visualization version GIF version | ||
| Description: Lemma 7 for pzriprng 21803: 𝐽 is a unital ring. (Contributed by AV, 19-Mar-2025.) |
| Ref | Expression |
|---|---|
| pzriprng.r | ⊢ 𝑅 = (ℤring ×s ℤring) |
| pzriprng.i | ⊢ 𝐼 = (ℤ × {0}) |
| pzriprng.j | ⊢ 𝐽 = (𝑅 ↾s 𝐼) |
| Ref | Expression |
|---|---|
| pzriprnglem7 | ⊢ 𝐽 ∈ Ring |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pzriprng.r | . . . 4 ⊢ 𝑅 = (ℤring ×s ℤring) | |
| 2 | pzriprng.i | . . . 4 ⊢ 𝐼 = (ℤ × {0}) | |
| 3 | 1, 2 | pzriprnglem5 21791 | . . 3 ⊢ 𝐼 ∈ (SubRng‘𝑅) |
| 4 | pzriprng.j | . . . 4 ⊢ 𝐽 = (𝑅 ↾s 𝐼) | |
| 5 | 4 | subrngrng 20802 | . . 3 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐽 ∈ Rng) |
| 6 | 3, 5 | ax-mp 5 | . 2 ⊢ 𝐽 ∈ Rng |
| 7 | 1z 12726 | . . . . 5 ⊢ 1 ∈ ℤ | |
| 8 | c0ex 11300 | . . . . . 6 ⊢ 0 ∈ V | |
| 9 | 8 | snid 4622 | . . . . 5 ⊢ 0 ∈ {0} |
| 10 | 7, 9 | opelxpii 5688 | . . . 4 ⊢ 〈1, 0〉 ∈ (ℤ × {0}) |
| 11 | 4 | subrngbas 20806 | . . . . . 6 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐼 = (Base‘𝐽)) |
| 12 | 3, 11 | ax-mp 5 | . . . . 5 ⊢ 𝐼 = (Base‘𝐽) |
| 13 | 12, 2 | eqtr3i 2785 | . . . 4 ⊢ (Base‘𝐽) = (ℤ × {0}) |
| 14 | 10, 13 | eleqtrri 2859 | . . 3 ⊢ 〈1, 0〉 ∈ (Base‘𝐽) |
| 15 | oveq1 7427 | . . . . . 6 ⊢ (𝑖 = 〈1, 0〉 → (𝑖(.r‘𝐽)𝑥) = (〈1, 0〉(.r‘𝐽)𝑥)) | |
| 16 | 15 | eqeq1d 2762 | . . . . 5 ⊢ (𝑖 = 〈1, 0〉 → ((𝑖(.r‘𝐽)𝑥) = 𝑥 ↔ (〈1, 0〉(.r‘𝐽)𝑥) = 𝑥)) |
| 17 | 16 | ovanraleqv 7444 | . . . 4 ⊢ (𝑖 = 〈1, 0〉 → (∀𝑥 ∈ (Base‘𝐽)((𝑖(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)𝑖) = 𝑥) ↔ ∀𝑥 ∈ (Base‘𝐽)((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥))) |
| 18 | id 23 | . . . 4 ⊢ (〈1, 0〉 ∈ (Base‘𝐽) → 〈1, 0〉 ∈ (Base‘𝐽)) | |
| 19 | 12 | eleq2i 2852 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐼 ↔ 𝑥 ∈ (Base‘𝐽)) |
| 20 | 1, 2, 4 | pzriprnglem6 21792 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐼 → ((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥)) |
| 21 | 19, 20 | sylbir 238 | . . . . . 6 ⊢ (𝑥 ∈ (Base‘𝐽) → ((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥)) |
| 22 | 21 | a1i 11 | . . . . 5 ⊢ (〈1, 0〉 ∈ (Base‘𝐽) → (𝑥 ∈ (Base‘𝐽) → ((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥))) |
| 23 | 22 | ralrimiv 3153 | . . . 4 ⊢ (〈1, 0〉 ∈ (Base‘𝐽) → ∀𝑥 ∈ (Base‘𝐽)((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥)) |
| 24 | 17, 18, 23 | rspcedvdw 3579 | . . 3 ⊢ (〈1, 0〉 ∈ (Base‘𝐽) → ∃𝑖 ∈ (Base‘𝐽)∀𝑥 ∈ (Base‘𝐽)((𝑖(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)𝑖) = 𝑥)) |
| 25 | 14, 24 | ax-mp 5 | . 2 ⊢ ∃𝑖 ∈ (Base‘𝐽)∀𝑥 ∈ (Base‘𝐽)((𝑖(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)𝑖) = 𝑥) |
| 26 | eqid 2760 | . . 3 ⊢ (Base‘𝐽) = (Base‘𝐽) | |
| 27 | eqid 2760 | . . 3 ⊢ (.r‘𝐽) = (.r‘𝐽) | |
| 28 | 26, 27 | isringrng 20516 | . 2 ⊢ (𝐽 ∈ Ring ↔ (𝐽 ∈ Rng ∧ ∃𝑖 ∈ (Base‘𝐽)∀𝑥 ∈ (Base‘𝐽)((𝑖(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)𝑖) = 𝑥))) |
| 29 | 6, 25, 28 | mpbir2an 724 | 1 ⊢ 𝐽 ∈ Ring |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∀wral 3076 ∃wrex 3086 {csn 4583 〈cop 4589 × cxp 5648 ‘cfv 6538 (class class class)co 7420 0cc0 11200 1c1 11201 ℤcz 12693 Basecbs 17387 ↾s cress 17408 .rcmulr 17429 ×s cxps 17678 Rngcrng 20374 Ringcrg 20459 SubRngcsubrng 20797 ℤringczring 21752 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 ax-addf 11279 ax-mulf 11280 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-tp 4588 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-2o 8477 df-er 8717 df-map 8849 df-ixp 8926 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-sup 9434 df-inf 9435 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-3 12406 df-4 12407 df-5 12408 df-6 12409 df-7 12410 df-8 12411 df-9 12412 df-n0 12607 df-z 12694 df-dec 12815 df-uz 12966 df-fz 13640 df-struct 17325 df-sets 17342 df-slot 17360 df-ndx 17372 df-base 17388 df-ress 17409 df-plusg 17441 df-mulr 17442 df-starv 17443 df-sca 17444 df-vsca 17445 df-ip 17446 df-tset 17447 df-ple 17448 df-ds 17450 df-unif 17451 df-hom 17452 df-cco 17453 df-0g 17612 df-prds 17618 df-imas 17680 df-xps 17682 df-mgm 18816 df-sgrp 18908 df-mnd 18924 df-grp 19147 df-minusg 19148 df-subg 19333 df-cmn 19996 df-abl 19997 df-mgp 20361 df-rng 20375 df-ur 20408 df-ring 20461 df-cring 20462 df-subrng 20798 df-subrg 20822 df-cnfld 21679 df-zring 21753 |
| This theorem is used by: pzriprnglem9 21795 pzriprngALT 21801 pzriprng1ALT 21802 |
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