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| Mirrors > Home > MPE Home > Th. List > abv1z | Structured version Visualization version GIF version | ||
| Description: The absolute value of one is one in a non-trivial ring. (Contributed by Mario Carneiro, 8-Sep-2014.) |
| Ref | Expression |
|---|---|
| abv0.a | ⊢ 𝐴 = (AbsVal‘𝑅) |
| abv1.p | ⊢ 1 = (1r‘𝑅) |
| abv1z.z | ⊢ 0 = (0g‘𝑅) |
| Ref | Expression |
|---|---|
| abv1z | ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) = 1) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abv0.a | . . . . . . . 8 ⊢ 𝐴 = (AbsVal‘𝑅) | |
| 2 | 1 | abvrcl 21100 | . . . . . . 7 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| 3 | eqid 2763 | . . . . . . . 8 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 4 | abv1.p | . . . . . . . 8 ⊢ 1 = (1r‘𝑅) | |
| 5 | 3, 4 | ringidcl 20524 | . . . . . . 7 ⊢ (𝑅 ∈ Ring → 1 ∈ (Base‘𝑅)) |
| 6 | 2, 5 | syl 18 | . . . . . 6 ⊢ (𝐹 ∈ 𝐴 → 1 ∈ (Base‘𝑅)) |
| 7 | 1, 3 | abvcl 21103 | . . . . . 6 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ∈ (Base‘𝑅)) → (𝐹‘ 1 ) ∈ ℝ) |
| 8 | 6, 7 | mpdan 700 | . . . . 5 ⊢ (𝐹 ∈ 𝐴 → (𝐹‘ 1 ) ∈ ℝ) |
| 9 | 8 | adantr 486 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ∈ ℝ) |
| 10 | 9 | recnd 11364 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ∈ ℂ) |
| 11 | simpl 488 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → 𝐹 ∈ 𝐴) | |
| 12 | 6 | adantr 486 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → 1 ∈ (Base‘𝑅)) |
| 13 | simpr 490 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → 1 ≠ 0 ) | |
| 14 | abv1z.z | . . . . 5 ⊢ 0 = (0g‘𝑅) | |
| 15 | 1, 3, 14 | abvne0 21106 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ∈ (Base‘𝑅) ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ≠ 0) |
| 16 | 11, 12, 13, 15 | syl3anc 1399 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ≠ 0) |
| 17 | 10, 10, 16 | divcan3d 12125 | . 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 )) = (𝐹‘ 1 )) |
| 18 | eqid 2763 | . . . . . . . 8 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 19 | 3, 18, 4 | ringlidm 20528 | . . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 1 ∈ (Base‘𝑅)) → ( 1 (.r‘𝑅) 1 ) = 1 ) |
| 20 | 2, 12, 19 | syl2an2r 698 | . . . . . 6 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → ( 1 (.r‘𝑅) 1 ) = 1 ) |
| 21 | 20 | fveq2d 6912 | . . . . 5 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘( 1 (.r‘𝑅) 1 )) = (𝐹‘ 1 )) |
| 22 | 1, 3, 18 | abvmul 21108 | . . . . . 6 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ∈ (Base‘𝑅) ∧ 1 ∈ (Base‘𝑅)) → (𝐹‘( 1 (.r‘𝑅) 1 )) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 23 | 11, 12, 12, 22 | syl3anc 1399 | . . . . 5 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘( 1 (.r‘𝑅) 1 )) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 24 | 21, 23 | eqtr3d 2800 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 25 | 24 | oveq1d 7458 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → ((𝐹‘ 1 ) / (𝐹‘ 1 )) = (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 ))) |
| 26 | 10, 16 | dividd 12118 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → ((𝐹‘ 1 ) / (𝐹‘ 1 )) = 1) |
| 27 | 25, 26 | eqtr3d 2800 | . 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 )) = 1) |
| 28 | 17, 27 | eqtr3d 2800 | 1 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) = 1) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 ‘cfv 6558 (class class class)co 7443 ℝcr 11226 0cc0 11227 1c1 11228 · cmul 11232 / cdiv 12000 Basecbs 17416 .rcmulr 17458 0gc0g 17639 1rcur 20437 Ringcrg 20489 AbsValcabv 21095 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-resscn 11284 ax-1cn 11285 ax-icn 11286 ax-addcl 11287 ax-addrcl 11288 ax-mulcl 11289 ax-mulrcl 11290 ax-mulcom 11291 ax-addass 11292 ax-mulass 11293 ax-distr 11294 ax-i2m1 11295 ax-1ne0 11296 ax-1rid 11297 ax-rnegex 11298 ax-rrecex 11299 ax-cnre 11300 ax-pre-lttri 11301 ax-pre-lttrn 11302 ax-pre-ltadd 11303 ax-pre-mulgt0 11304 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6322 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-riota 7400 df-ov 7446 df-oprab 7447 df-mpo 7448 df-om 7902 df-2nd 8026 df-frecs 8327 df-wrecs 8358 df-recs 8407 df-rdg 8446 df-er 8745 df-map 8877 df-en 9002 df-dom 9003 df-sdom 9004 df-pnf 11372 df-mnf 11373 df-xr 11374 df-ltxr 11375 df-le 11376 df-sub 11570 df-neg 11571 df-div 12001 df-nn 12363 df-2 12432 df-ico 13509 df-sets 17371 df-slot 17389 df-ndx 17401 df-base 17417 df-plusg 17470 df-0g 17641 df-mgm 18845 df-sgrp 18937 df-mnd 18953 df-mgp 20391 df-ur 20438 df-ring 20491 df-abv 21096 |
| This theorem is used by: abv1 21112 abvneg 21113 nm1 25016 qabvle 27982 qabvexp 27983 ostthlem2 27985 ostth3 27995 ostth 27996 abvexp 43789 fiabv 43793 |
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