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Mirrors > Home > MPE Home > Th. List > irredn0 | Structured version Visualization version GIF version |
Description: The additive identity is not irreducible. (Contributed by Mario Carneiro, 4-Dec-2014.) |
Ref | Expression |
---|---|
irredn0.i | ⊢ 𝐼 = (Irred‘𝑅) |
irredn0.z | ⊢ 0 = (0g‘𝑅) |
Ref | Expression |
---|---|
irredn0 | ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → 𝑋 ≠ 0 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . . . . . . . . . 10 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
2 | irredn0.z | . . . . . . . . . 10 ⊢ 0 = (0g‘𝑅) | |
3 | 1, 2 | ring0cl 19723 | . . . . . . . . 9 ⊢ (𝑅 ∈ Ring → 0 ∈ (Base‘𝑅)) |
4 | 3 | anim1i 614 | . . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ ¬ 0 ∈ (Unit‘𝑅)) → ( 0 ∈ (Base‘𝑅) ∧ ¬ 0 ∈ (Unit‘𝑅))) |
5 | eldif 3893 | . . . . . . . 8 ⊢ ( 0 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅)) ↔ ( 0 ∈ (Base‘𝑅) ∧ ¬ 0 ∈ (Unit‘𝑅))) | |
6 | 4, 5 | sylibr 233 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ ¬ 0 ∈ (Unit‘𝑅)) → 0 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))) |
7 | eqid 2738 | . . . . . . . . . 10 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
8 | 1, 7, 2 | ringlz 19741 | . . . . . . . . 9 ⊢ ((𝑅 ∈ Ring ∧ 0 ∈ (Base‘𝑅)) → ( 0 (.r‘𝑅) 0 ) = 0 ) |
9 | 3, 8 | mpdan 683 | . . . . . . . 8 ⊢ (𝑅 ∈ Ring → ( 0 (.r‘𝑅) 0 ) = 0 ) |
10 | 9 | adantr 480 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ ¬ 0 ∈ (Unit‘𝑅)) → ( 0 (.r‘𝑅) 0 ) = 0 ) |
11 | oveq1 7262 | . . . . . . . . 9 ⊢ (𝑥 = 0 → (𝑥(.r‘𝑅)𝑦) = ( 0 (.r‘𝑅)𝑦)) | |
12 | 11 | eqeq1d 2740 | . . . . . . . 8 ⊢ (𝑥 = 0 → ((𝑥(.r‘𝑅)𝑦) = 0 ↔ ( 0 (.r‘𝑅)𝑦) = 0 )) |
13 | oveq2 7263 | . . . . . . . . 9 ⊢ (𝑦 = 0 → ( 0 (.r‘𝑅)𝑦) = ( 0 (.r‘𝑅) 0 )) | |
14 | 13 | eqeq1d 2740 | . . . . . . . 8 ⊢ (𝑦 = 0 → (( 0 (.r‘𝑅)𝑦) = 0 ↔ ( 0 (.r‘𝑅) 0 ) = 0 )) |
15 | 12, 14 | rspc2ev 3564 | . . . . . . 7 ⊢ (( 0 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅)) ∧ 0 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅)) ∧ ( 0 (.r‘𝑅) 0 ) = 0 ) → ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 ) |
16 | 6, 6, 10, 15 | syl3anc 1369 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ ¬ 0 ∈ (Unit‘𝑅)) → ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 ) |
17 | 16 | ex 412 | . . . . 5 ⊢ (𝑅 ∈ Ring → (¬ 0 ∈ (Unit‘𝑅) → ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 )) |
18 | 17 | orrd 859 | . . . 4 ⊢ (𝑅 ∈ Ring → ( 0 ∈ (Unit‘𝑅) ∨ ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 )) |
19 | eqid 2738 | . . . . . 6 ⊢ (Unit‘𝑅) = (Unit‘𝑅) | |
20 | irredn0.i | . . . . . 6 ⊢ 𝐼 = (Irred‘𝑅) | |
21 | eqid 2738 | . . . . . 6 ⊢ ((Base‘𝑅) ∖ (Unit‘𝑅)) = ((Base‘𝑅) ∖ (Unit‘𝑅)) | |
22 | 1, 19, 20, 21, 7 | isnirred 19857 | . . . . 5 ⊢ ( 0 ∈ (Base‘𝑅) → (¬ 0 ∈ 𝐼 ↔ ( 0 ∈ (Unit‘𝑅) ∨ ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 ))) |
23 | 3, 22 | syl 17 | . . . 4 ⊢ (𝑅 ∈ Ring → (¬ 0 ∈ 𝐼 ↔ ( 0 ∈ (Unit‘𝑅) ∨ ∃𝑥 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))∃𝑦 ∈ ((Base‘𝑅) ∖ (Unit‘𝑅))(𝑥(.r‘𝑅)𝑦) = 0 ))) |
24 | 18, 23 | mpbird 256 | . . 3 ⊢ (𝑅 ∈ Ring → ¬ 0 ∈ 𝐼) |
25 | 24 | adantr 480 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → ¬ 0 ∈ 𝐼) |
26 | simpr 484 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → 𝑋 ∈ 𝐼) | |
27 | eleq1 2826 | . . . 4 ⊢ (𝑋 = 0 → (𝑋 ∈ 𝐼 ↔ 0 ∈ 𝐼)) | |
28 | 26, 27 | syl5ibcom 244 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → (𝑋 = 0 → 0 ∈ 𝐼)) |
29 | 28 | necon3bd 2956 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → (¬ 0 ∈ 𝐼 → 𝑋 ≠ 0 )) |
30 | 25, 29 | mpd 15 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐼) → 𝑋 ≠ 0 ) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∨ wo 843 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∃wrex 3064 ∖ cdif 3880 ‘cfv 6418 (class class class)co 7255 Basecbs 16840 .rcmulr 16889 0gc0g 17067 Ringcrg 19698 Unitcui 19796 Irredcir 19797 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-plusg 16901 df-0g 17069 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-grp 18495 df-minusg 18496 df-mgp 19636 df-ring 19700 df-irred 19800 |
This theorem is referenced by: prmirred 20608 |
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