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| Mirrors > Home > ILE Home > Th. List > zring1 | GIF version | ||
| Description: The unity element of the ring of integers. (Contributed by Thierry Arnoux, 1-Nov-2017.) (Revised by AV, 9-Jun-2019.) |
| Ref | Expression |
|---|---|
| zring1 | ⊢ 1 = (1r‘ℤring) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zsubrg 14657 | . 2 ⊢ ℤ ∈ (SubRing‘ℂfld) | |
| 2 | df-zring 14667 | . . 3 ⊢ ℤring = (ℂfld ↾s ℤ) | |
| 3 | cnfld1 14648 | . . 3 ⊢ 1 = (1r‘ℂfld) | |
| 4 | 2, 3 | subrg1 14307 | . 2 ⊢ (ℤ ∈ (SubRing‘ℂfld) → 1 = (1r‘ℤring)) |
| 5 | 1, 4 | ax-mp 5 | 1 ⊢ 1 = (1r‘ℤring) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 ∈ wcel 2202 ‘cfv 5333 1c1 8076 ℤcz 9522 1rcur 14034 SubRingcsubrg 14293 ℂfldccnfld 14632 ℤringczring 14666 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 ax-addf 8197 ax-mulf 8198 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-tp 3681 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-pnf 8259 df-mnf 8260 df-xr 8261 df-ltxr 8262 df-le 8263 df-sub 8395 df-neg 8396 df-reap 8798 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-5 9248 df-6 9249 df-7 9250 df-8 9251 df-9 9252 df-n0 9446 df-z 9523 df-dec 9655 df-uz 9799 df-rp 9932 df-fz 10287 df-cj 11463 df-abs 11620 df-struct 13145 df-ndx 13146 df-slot 13147 df-base 13149 df-sets 13150 df-iress 13151 df-plusg 13234 df-mulr 13235 df-starv 13236 df-tset 13240 df-ple 13241 df-ds 13243 df-unif 13244 df-0g 13402 df-topgen 13404 df-mgm 13500 df-sgrp 13546 df-mnd 13561 df-grp 13647 df-minusg 13648 df-subg 13818 df-cmn 13934 df-mgp 13996 df-ur 14035 df-ring 14073 df-cring 14074 df-subrg 14295 df-bl 14622 df-mopn 14623 df-fg 14625 df-metu 14626 df-cnfld 14633 df-zring 14667 |
| This theorem is referenced by: zringnzr 14678 mulgrhm 14685 mulgrhm2 14686 zrh1 14700 |
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