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| Mirrors > Home > MPE Home > Th. List > pzriprnglem7 | Structured version Visualization version GIF version | ||
| Description: Lemma 7 for pzriprng 21626: 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 21614 | . . 3 ⊢ 𝐼 ∈ (SubRng‘𝑅) |
| 4 | pzriprng.j | . . . 4 ⊢ 𝐽 = (𝑅 ↾s 𝐼) | |
| 5 | 4 | subrngrng 20634 | . . 3 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐽 ∈ Rng) |
| 6 | 3, 5 | ax-mp 5 | . 2 ⊢ 𝐽 ∈ Rng |
| 7 | 1z 12623 | . . . . 5 ⊢ 1 ∈ ℤ | |
| 8 | c0ex 11199 | . . . . . 6 ⊢ 0 ∈ V | |
| 9 | 8 | snid 4627 | . . . . 5 ⊢ 0 ∈ {0} |
| 10 | 7, 9 | opelxpii 5699 | . . . 4 ⊢ 〈1, 0〉 ∈ (ℤ × {0}) |
| 11 | 4 | subrngbas 20638 | . . . . . 6 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐼 = (Base‘𝐽)) |
| 12 | 3, 11 | ax-mp 5 | . . . . 5 ⊢ 𝐼 = (Base‘𝐽) |
| 13 | 12, 2 | eqtr3i 2786 | . . . 4 ⊢ (Base‘𝐽) = (ℤ × {0}) |
| 14 | 10, 13 | eleqtrri 2860 | . . 3 ⊢ 〈1, 0〉 ∈ (Base‘𝐽) |
| 15 | oveq1 7417 | . . . . . 6 ⊢ (𝑖 = 〈1, 0〉 → (𝑖(.r‘𝐽)𝑥) = (〈1, 0〉(.r‘𝐽)𝑥)) | |
| 16 | 15 | eqeq1d 2763 | . . . . 5 ⊢ (𝑖 = 〈1, 0〉 → ((𝑖(.r‘𝐽)𝑥) = 𝑥 ↔ (〈1, 0〉(.r‘𝐽)𝑥) = 𝑥)) |
| 17 | 16 | ovanraleqv 7434 | . . . 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 2853 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐼 ↔ 𝑥 ∈ (Base‘𝐽)) |
| 20 | 1, 2, 4 | pzriprnglem6 21615 | . . . . . . 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 3154 | . . . 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 3583 | . . 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 2761 | . . 3 ⊢ (Base‘𝐽) = (Base‘𝐽) | |
| 27 | eqid 2761 | . . 3 ⊢ (.r‘𝐽) = (.r‘𝐽) | |
| 28 | 26, 27 | isringrng 20369 | . 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 723 | 1 ⊢ 𝐽 ∈ Ring |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1568 ∈ wcel 2141 ∀wral 3077 ∃wrex 3087 {csn 4588 〈cop 4594 × cxp 5659 ‘cfv 6536 (class class class)co 7410 0cc0 11099 1c1 11100 ℤcz 12590 Basecbs 17268 ↾s cress 17289 .rcmulr 17310 ×s cxps 17559 Rngcrng 20229 Ringcrg 20314 SubRngcsubrng 20629 ℤringczring 21575 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 ax-addf 11178 ax-mulf 11179 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 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 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 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 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7862 df-1st 7985 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-2o 8453 df-er 8693 df-map 8825 df-ixp 8895 df-en 8943 df-dom 8944 df-sdom 8945 df-fin 8946 df-sup 9401 df-inf 9402 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-nn 12233 df-2 12302 df-3 12303 df-4 12304 df-5 12305 df-6 12306 df-7 12307 df-8 12308 df-9 12309 df-n0 12504 df-z 12591 df-dec 12711 df-uz 12862 df-fz 13535 df-struct 17206 df-sets 17223 df-slot 17241 df-ndx 17253 df-base 17269 df-ress 17290 df-plusg 17322 df-mulr 17323 df-starv 17324 df-sca 17325 df-vsca 17326 df-ip 17327 df-tset 17328 df-ple 17329 df-ds 17331 df-unif 17332 df-hom 17333 df-cco 17334 df-0g 17493 df-prds 17499 df-imas 17561 df-xps 17563 df-mgm 18697 df-sgrp 18776 df-mnd 18792 df-grp 19002 df-minusg 19003 df-subg 19188 df-cmn 19851 df-abl 19852 df-mgp 20216 df-rng 20230 df-ur 20263 df-ring 20316 df-cring 20317 df-subrng 20630 df-subrg 20654 df-cnfld 21502 df-zring 21576 |
| This theorem is referenced by: pzriprnglem9 21618 pzriprngALT 21624 pzriprng1ALT 21625 |
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