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| Mirrors > Home > MPE Home > Th. List > pzriprnglem7 | Structured version Visualization version GIF version | ||
| Description: Lemma 7 for pzriprng 21475: 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 21463 | . . 3 ⊢ 𝐼 ∈ (SubRng‘𝑅) |
| 4 | pzriprng.j | . . . 4 ⊢ 𝐽 = (𝑅 ↾s 𝐼) | |
| 5 | 4 | subrngrng 20525 | . . 3 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐽 ∈ Rng) |
| 6 | 3, 5 | ax-mp 5 | . 2 ⊢ 𝐽 ∈ Rng |
| 7 | 1z 12552 | . . . . 5 ⊢ 1 ∈ ℤ | |
| 8 | c0ex 11134 | . . . . . 6 ⊢ 0 ∈ V | |
| 9 | 8 | snid 4596 | . . . . 5 ⊢ 0 ∈ {0} |
| 10 | 7, 9 | opelxpii 5658 | . . . 4 ⊢ 〈1, 0〉 ∈ (ℤ × {0}) |
| 11 | 4 | subrngbas 20529 | . . . . . 6 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐼 = (Base‘𝐽)) |
| 12 | 3, 11 | ax-mp 5 | . . . . 5 ⊢ 𝐼 = (Base‘𝐽) |
| 13 | 12, 2 | eqtr3i 2766 | . . . 4 ⊢ (Base‘𝐽) = (ℤ × {0}) |
| 14 | 10, 13 | eleqtrri 2840 | . . 3 ⊢ 〈1, 0〉 ∈ (Base‘𝐽) |
| 15 | oveq1 7366 | . . . . . 6 ⊢ (𝑖 = 〈1, 0〉 → (𝑖(.r‘𝐽)𝑥) = (〈1, 0〉(.r‘𝐽)𝑥)) | |
| 16 | 15 | eqeq1d 2743 | . . . . 5 ⊢ (𝑖 = 〈1, 0〉 → ((𝑖(.r‘𝐽)𝑥) = 𝑥 ↔ (〈1, 0〉(.r‘𝐽)𝑥) = 𝑥)) |
| 17 | 16 | ovanraleqv 7383 | . . . 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 22 | . . . 4 ⊢ (〈1, 0〉 ∈ (Base‘𝐽) → 〈1, 0〉 ∈ (Base‘𝐽)) | |
| 19 | 12 | eleq2i 2833 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐼 ↔ 𝑥 ∈ (Base‘𝐽)) |
| 20 | 1, 2, 4 | pzriprnglem6 21464 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐼 → ((〈1, 0〉(.r‘𝐽)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐽)〈1, 0〉) = 𝑥)) |
| 21 | 19, 20 | sylbir 237 | . . . . . 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 3132 | . . . 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 3564 | . . 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 2741 | . . 3 ⊢ (Base‘𝐽) = (Base‘𝐽) | |
| 27 | eqid 2741 | . . 3 ⊢ (.r‘𝐽) = (.r‘𝐽) | |
| 28 | 26, 27 | isringrng 20262 | . 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 718 | 1 ⊢ 𝐽 ∈ Ring |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 = wceq 1548 ∈ wcel 2121 ∀wral 3055 ∃wrex 3065 {csn 4557 〈cop 4563 × cxp 5618 ‘cfv 6488 (class class class)co 7359 0cc0 11034 1c1 11035 ℤcz 12519 Basecbs 17174 ↾s cress 17195 .rcmulr 17216 ×s cxps 17465 Rngcrng 20127 Ringcrg 20208 SubRngcsubrng 20520 ℤringczring 21424 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-cnex 11090 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-pre-mulgt0 11111 ax-addf 11113 ax-mulf 11114 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3904 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7933 df-2nd 7934 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8343 df-1o 8399 df-2o 8400 df-er 8637 df-map 8769 df-ixp 8840 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-inf 9350 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-sub 11375 df-neg 11376 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-z 12520 df-dec 12640 df-uz 12784 df-fz 13457 df-struct 17112 df-sets 17129 df-slot 17147 df-ndx 17159 df-base 17175 df-ress 17196 df-plusg 17228 df-mulr 17229 df-starv 17230 df-sca 17231 df-vsca 17232 df-ip 17233 df-tset 17234 df-ple 17235 df-ds 17237 df-unif 17238 df-hom 17239 df-cco 17240 df-0g 17399 df-prds 17405 df-imas 17467 df-xps 17469 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18907 df-minusg 18908 df-subg 19094 df-cmn 19751 df-abl 19752 df-mgp 20116 df-rng 20128 df-ur 20157 df-ring 20210 df-cring 20211 df-subrng 20521 df-subrg 20545 df-cnfld 21351 df-zring 21425 |
| This theorem is referenced by: pzriprnglem9 21467 pzriprngALT 21473 pzriprng1ALT 21474 |
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