Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > ofldlt1 | Structured version Visualization version GIF version |
Description: In an ordered field, the ring unit is strictly positive. (Contributed by Thierry Arnoux, 21-Jan-2018.) |
Ref | Expression |
---|---|
orng0le1.1 | ⊢ 0 = (0g‘𝐹) |
orng0le1.2 | ⊢ 1 = (1r‘𝐹) |
ofld0lt1.3 | ⊢ < = (lt‘𝐹) |
Ref | Expression |
---|---|
ofldlt1 | ⊢ (𝐹 ∈ oField → 0 < 1 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isofld 30877 | . . . 4 ⊢ (𝐹 ∈ oField ↔ (𝐹 ∈ Field ∧ 𝐹 ∈ oRing)) | |
2 | 1 | simprbi 499 | . . 3 ⊢ (𝐹 ∈ oField → 𝐹 ∈ oRing) |
3 | orng0le1.1 | . . . 4 ⊢ 0 = (0g‘𝐹) | |
4 | orng0le1.2 | . . . 4 ⊢ 1 = (1r‘𝐹) | |
5 | eqid 2823 | . . . 4 ⊢ (le‘𝐹) = (le‘𝐹) | |
6 | 3, 4, 5 | orng0le1 30887 | . . 3 ⊢ (𝐹 ∈ oRing → 0 (le‘𝐹) 1 ) |
7 | 2, 6 | syl 17 | . 2 ⊢ (𝐹 ∈ oField → 0 (le‘𝐹) 1 ) |
8 | ofldfld 30885 | . . . 4 ⊢ (𝐹 ∈ oField → 𝐹 ∈ Field) | |
9 | isfld 19513 | . . . . 5 ⊢ (𝐹 ∈ Field ↔ (𝐹 ∈ DivRing ∧ 𝐹 ∈ CRing)) | |
10 | 9 | simplbi 500 | . . . 4 ⊢ (𝐹 ∈ Field → 𝐹 ∈ DivRing) |
11 | 3, 4 | drngunz 19519 | . . . 4 ⊢ (𝐹 ∈ DivRing → 1 ≠ 0 ) |
12 | 8, 10, 11 | 3syl 18 | . . 3 ⊢ (𝐹 ∈ oField → 1 ≠ 0 ) |
13 | 12 | necomd 3073 | . 2 ⊢ (𝐹 ∈ oField → 0 ≠ 1 ) |
14 | 3 | fvexi 6686 | . . 3 ⊢ 0 ∈ V |
15 | 4 | fvexi 6686 | . . 3 ⊢ 1 ∈ V |
16 | ofld0lt1.3 | . . . 4 ⊢ < = (lt‘𝐹) | |
17 | 5, 16 | pltval 17572 | . . 3 ⊢ ((𝐹 ∈ oField ∧ 0 ∈ V ∧ 1 ∈ V) → ( 0 < 1 ↔ ( 0 (le‘𝐹) 1 ∧ 0 ≠ 1 ))) |
18 | 14, 15, 17 | mp3an23 1449 | . 2 ⊢ (𝐹 ∈ oField → ( 0 < 1 ↔ ( 0 (le‘𝐹) 1 ∧ 0 ≠ 1 ))) |
19 | 7, 13, 18 | mpbir2and 711 | 1 ⊢ (𝐹 ∈ oField → 0 < 1 ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ≠ wne 3018 Vcvv 3496 class class class wbr 5068 ‘cfv 6357 lecple 16574 0gc0g 16715 ltcplt 17553 1rcur 19253 CRingccrg 19300 DivRingcdr 19504 Fieldcfield 19505 oRingcorng 30870 oFieldcofld 30871 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-rep 5192 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-tpos 7894 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-nn 11641 df-2 11703 df-3 11704 df-ndx 16488 df-slot 16489 df-base 16491 df-sets 16492 df-plusg 16580 df-mulr 16581 df-0g 16717 df-proset 17540 df-poset 17558 df-plt 17570 df-toset 17646 df-mgm 17854 df-sgrp 17903 df-mnd 17914 df-grp 18108 df-minusg 18109 df-mgp 19242 df-ur 19254 df-ring 19301 df-oppr 19375 df-dvdsr 19393 df-unit 19394 df-drng 19506 df-field 19507 df-omnd 30702 df-ogrp 30703 df-orng 30872 df-ofld 30873 |
This theorem is referenced by: ofldchr 30889 isarchiofld 30892 |
Copyright terms: Public domain | W3C validator |