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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 20953 | . . . . . . 7 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| 3 | eqid 2766 | . . . . . . . 8 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 4 | abv1.p | . . . . . . . 8 ⊢ 1 = (1r‘𝑅) | |
| 5 | 3, 4 | ringidcl 20380 | . . . . . . 7 ⊢ (𝑅 ∈ Ring → 1 ∈ (Base‘𝑅)) |
| 6 | 2, 5 | syl 18 | . . . . . 6 ⊢ (𝐹 ∈ 𝐴 → 1 ∈ (Base‘𝑅)) |
| 7 | 1, 3 | abvcl 20956 | . . . . . 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 11255 | . . 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 20959 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ∈ (Base‘𝑅) ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ≠ 0) |
| 16 | 11, 12, 13, 15 | syl3anc 1398 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) ≠ 0) |
| 17 | 10, 10, 16 | divcan3d 12014 | . 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 )) = (𝐹‘ 1 )) |
| 18 | eqid 2766 | . . . . . . . 8 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 19 | 3, 18, 4 | ringlidm 20384 | . . . . . . 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 6892 | . . . . 5 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘( 1 (.r‘𝑅) 1 )) = (𝐹‘ 1 )) |
| 22 | 1, 3, 18 | abvmul 20961 | . . . . . 6 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ∈ (Base‘𝑅) ∧ 1 ∈ (Base‘𝑅)) → (𝐹‘( 1 (.r‘𝑅) 1 )) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 23 | 11, 12, 12, 22 | syl3anc 1398 | . . . . 5 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘( 1 (.r‘𝑅) 1 )) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 24 | 21, 23 | eqtr3d 2803 | . . . 4 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (𝐹‘ 1 ) = ((𝐹‘ 1 ) · (𝐹‘ 1 ))) |
| 25 | 24 | oveq1d 7438 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → ((𝐹‘ 1 ) / (𝐹‘ 1 )) = (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 ))) |
| 26 | 10, 16 | dividd 12007 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → ((𝐹‘ 1 ) / (𝐹‘ 1 )) = 1) |
| 27 | 25, 26 | eqtr3d 2803 | . 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 1 ≠ 0 ) → (((𝐹‘ 1 ) · (𝐹‘ 1 )) / (𝐹‘ 1 )) = 1) |
| 28 | 17, 27 | eqtr3d 2803 | 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 2146 ≠ wne 2961 ‘cfv 6543 (class class class)co 7423 ℝcr 11117 0cc0 11118 1c1 11119 · cmul 11123 / cdiv 11889 Basecbs 17294 .rcmulr 17336 0gc0g 17517 1rcur 20294 Ringcrg 20346 AbsValcabv 20948 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 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 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-er 8703 df-map 8835 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-div 11890 df-nn 12252 df-2 12321 df-ico 13396 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-plusg 17348 df-0g 17519 df-mgm 18723 df-sgrp 18806 df-mnd 18822 df-mgp 20248 df-ur 20295 df-ring 20348 df-abv 20949 |
| This theorem is used by: abv1 20965 abvneg 20966 nm1 24861 qabvle 27826 qabvexp 27827 ostthlem2 27829 ostth3 27839 ostth 27840 abvexp 43341 fiabv 43345 |
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