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Mirrors > Home > ILE Home > Th. List > ring1eq0 | GIF version |
Description: If one and zero are equal, then any two elements of a ring are equal. Alternately, every ring has one distinct from zero except the zero ring containing the single element {0}. (Contributed by Mario Carneiro, 10-Sep-2014.) |
Ref | Expression |
---|---|
ring1eq0.b | ⊢ 𝐵 = (Base‘𝑅) |
ring1eq0.u | ⊢ 1 = (1r‘𝑅) |
ring1eq0.z | ⊢ 0 = (0g‘𝑅) |
Ref | Expression |
---|---|
ring1eq0 | ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ( 1 = 0 → 𝑋 = 𝑌)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr 110 | . . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → 1 = 0 ) | |
2 | 1 | oveq1d 5880 | . . . 4 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑋) = ( 0 (.r‘𝑅)𝑋)) |
3 | 1 | oveq1d 5880 | . . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑌) = ( 0 (.r‘𝑅)𝑌)) |
4 | simpl1 1000 | . . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → 𝑅 ∈ Ring) | |
5 | simpl2 1001 | . . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → 𝑋 ∈ 𝐵) | |
6 | ring1eq0.b | . . . . . . . 8 ⊢ 𝐵 = (Base‘𝑅) | |
7 | eqid 2175 | . . . . . . . 8 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
8 | ring1eq0.z | . . . . . . . 8 ⊢ 0 = (0g‘𝑅) | |
9 | 6, 7, 8 | ringlz 13014 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → ( 0 (.r‘𝑅)𝑋) = 0 ) |
10 | 4, 5, 9 | syl2anc 411 | . . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 0 (.r‘𝑅)𝑋) = 0 ) |
11 | simpl3 1002 | . . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → 𝑌 ∈ 𝐵) | |
12 | 6, 7, 8 | ringlz 13014 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵) → ( 0 (.r‘𝑅)𝑌) = 0 ) |
13 | 4, 11, 12 | syl2anc 411 | . . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 0 (.r‘𝑅)𝑌) = 0 ) |
14 | 10, 13 | eqtr4d 2211 | . . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 0 (.r‘𝑅)𝑋) = ( 0 (.r‘𝑅)𝑌)) |
15 | 3, 14 | eqtr4d 2211 | . . . 4 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑌) = ( 0 (.r‘𝑅)𝑋)) |
16 | 2, 15 | eqtr4d 2211 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑋) = ( 1 (.r‘𝑅)𝑌)) |
17 | ring1eq0.u | . . . . 5 ⊢ 1 = (1r‘𝑅) | |
18 | 6, 7, 17 | ringlidm 12999 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → ( 1 (.r‘𝑅)𝑋) = 𝑋) |
19 | 4, 5, 18 | syl2anc 411 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑋) = 𝑋) |
20 | 6, 7, 17 | ringlidm 12999 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑌 ∈ 𝐵) → ( 1 (.r‘𝑅)𝑌) = 𝑌) |
21 | 4, 11, 20 | syl2anc 411 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → ( 1 (.r‘𝑅)𝑌) = 𝑌) |
22 | 16, 19, 21 | 3eqtr3d 2216 | . 2 ⊢ (((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 1 = 0 ) → 𝑋 = 𝑌) |
23 | 22 | ex 115 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ( 1 = 0 → 𝑋 = 𝑌)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 978 = wceq 1353 ∈ wcel 2146 ‘cfv 5208 (class class class)co 5865 Basecbs 12427 .rcmulr 12492 0gc0g 12625 1rcur 12935 Ringcrg 12972 |
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 614 ax-in2 615 ax-io 709 ax-5 1445 ax-7 1446 ax-gen 1447 ax-ie1 1491 ax-ie2 1492 ax-8 1502 ax-10 1503 ax-11 1504 ax-i12 1505 ax-bndl 1507 ax-4 1508 ax-17 1524 ax-i9 1528 ax-ial 1532 ax-i5r 1533 ax-13 2148 ax-14 2149 ax-ext 2157 ax-coll 4113 ax-sep 4116 ax-pow 4169 ax-pr 4203 ax-un 4427 ax-setind 4530 ax-cnex 7877 ax-resscn 7878 ax-1cn 7879 ax-1re 7880 ax-icn 7881 ax-addcl 7882 ax-addrcl 7883 ax-mulcl 7884 ax-addcom 7886 ax-addass 7888 ax-i2m1 7891 ax-0lt1 7892 ax-0id 7894 ax-rnegex 7895 ax-pre-ltirr 7898 ax-pre-ltadd 7902 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1459 df-sb 1761 df-eu 2027 df-mo 2028 df-clab 2162 df-cleq 2168 df-clel 2171 df-nfc 2306 df-ne 2346 df-nel 2441 df-ral 2458 df-rex 2459 df-reu 2460 df-rmo 2461 df-rab 2462 df-v 2737 df-sbc 2961 df-csb 3056 df-dif 3129 df-un 3131 df-in 3133 df-ss 3140 df-nul 3421 df-pw 3574 df-sn 3595 df-pr 3596 df-op 3598 df-uni 3806 df-int 3841 df-iun 3884 df-br 3999 df-opab 4060 df-mpt 4061 df-id 4287 df-xp 4626 df-rel 4627 df-cnv 4628 df-co 4629 df-dm 4630 df-rn 4631 df-res 4632 df-ima 4633 df-iota 5170 df-fun 5210 df-fn 5211 df-f 5212 df-f1 5213 df-fo 5214 df-f1o 5215 df-fv 5216 df-riota 5821 df-ov 5868 df-oprab 5869 df-mpo 5870 df-pnf 7968 df-mnf 7969 df-ltxr 7971 df-inn 8891 df-2 8949 df-3 8950 df-ndx 12430 df-slot 12431 df-base 12433 df-sets 12434 df-plusg 12504 df-mulr 12505 df-0g 12627 df-mgm 12639 df-sgrp 12672 df-mnd 12682 df-grp 12740 df-minusg 12741 df-mgp 12926 df-ur 12936 df-ring 12974 |
This theorem is referenced by: (None) |
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