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Mirrors > Home > MPE Home > Th. List > refld | Structured version Visualization version GIF version |
Description: The real numbers form a field. (Contributed by Thierry Arnoux, 1-Nov-2017.) |
Ref | Expression |
---|---|
refld | ⊢ ℝfld ∈ Field |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | resubdrg 21469 | . . 3 ⊢ (ℝ ∈ (SubRing‘ℂfld) ∧ ℝfld ∈ DivRing) | |
2 | 1 | simpri 485 | . 2 ⊢ ℝfld ∈ DivRing |
3 | df-refld 21466 | . . 3 ⊢ ℝfld = (ℂfld ↾s ℝ) | |
4 | cncrng 21250 | . . . 4 ⊢ ℂfld ∈ CRing | |
5 | 1 | simpli 483 | . . . 4 ⊢ ℝ ∈ (SubRing‘ℂfld) |
6 | eqid 2724 | . . . . 5 ⊢ (ℂfld ↾s ℝ) = (ℂfld ↾s ℝ) | |
7 | 6 | subrgcrng 20467 | . . . 4 ⊢ ((ℂfld ∈ CRing ∧ ℝ ∈ (SubRing‘ℂfld)) → (ℂfld ↾s ℝ) ∈ CRing) |
8 | 4, 5, 7 | mp2an 689 | . . 3 ⊢ (ℂfld ↾s ℝ) ∈ CRing |
9 | 3, 8 | eqeltri 2821 | . 2 ⊢ ℝfld ∈ CRing |
10 | isfld 20588 | . 2 ⊢ (ℝfld ∈ Field ↔ (ℝfld ∈ DivRing ∧ ℝfld ∈ CRing)) | |
11 | 2, 9, 10 | mpbir2an 708 | 1 ⊢ ℝfld ∈ Field |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2098 ‘cfv 6533 (class class class)co 7401 ℝcr 11105 ↾s cress 17172 CRingccrg 20129 SubRingcsubrg 20459 DivRingcdr 20577 Fieldcfield 20578 ℂfldccnfld 21228 ℝfldcrefld 21465 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-rep 5275 ax-sep 5289 ax-nul 5296 ax-pow 5353 ax-pr 5417 ax-un 7718 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-addf 11185 ax-mulf 11186 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-nel 3039 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3959 df-nul 4315 df-if 4521 df-pw 4596 df-sn 4621 df-pr 4623 df-tp 4625 df-op 4627 df-uni 4900 df-iun 4989 df-br 5139 df-opab 5201 df-mpt 5222 df-tr 5256 df-id 5564 df-eprel 5570 df-po 5578 df-so 5579 df-fr 5621 df-we 5623 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7357 df-ov 7404 df-oprab 7405 df-mpo 7406 df-om 7849 df-1st 7968 df-2nd 7969 df-tpos 8206 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-1o 8461 df-er 8699 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-div 11869 df-nn 12210 df-2 12272 df-3 12273 df-4 12274 df-5 12275 df-6 12276 df-7 12277 df-8 12278 df-9 12279 df-n0 12470 df-z 12556 df-dec 12675 df-uz 12820 df-fz 13482 df-struct 17079 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-ress 17173 df-plusg 17209 df-mulr 17210 df-starv 17211 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-0g 17386 df-mgm 18563 df-sgrp 18642 df-mnd 18658 df-grp 18856 df-minusg 18857 df-subg 19040 df-cmn 19692 df-abl 19693 df-mgp 20030 df-rng 20048 df-ur 20077 df-ring 20130 df-cring 20131 df-oppr 20226 df-dvdsr 20249 df-unit 20250 df-invr 20280 df-dvr 20293 df-subrng 20436 df-subrg 20461 df-drng 20579 df-field 20580 df-cnfld 21229 df-refld 21466 |
This theorem is referenced by: resrng 21482 recvs 24995 recvsOLD 24996 rrxbase 25238 rrxprds 25239 rrxip 25240 rrxcph 25242 rrxsca 25246 rrx0 25247 reofld 32925 rearchi 32927 ccfldextrr 33206 ccfldsrarelvec 33225 bj-rrdrg 36661 |
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