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| Mirrors > Home > MPE Home > Th. List > abv0 | Structured version Visualization version GIF version | ||
| Description: The absolute value of zero is zero. (Contributed by Mario Carneiro, 8-Sep-2014.) |
| Ref | Expression |
|---|---|
| abv0.a | ⊢ 𝐴 = (AbsVal‘𝑅) |
| abv0.z | ⊢ 0 = (0g‘𝑅) |
| Ref | Expression |
|---|---|
| abv0 | ⊢ (𝐹 ∈ 𝐴 → (𝐹‘ 0 ) = 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abv0.a | . . . 4 ⊢ 𝐴 = (AbsVal‘𝑅) | |
| 2 | 1 | abvrcl 21100 | . . 3 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| 3 | eqid 2763 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 4 | abv0.z | . . . 4 ⊢ 0 = (0g‘𝑅) | |
| 5 | 3, 4 | ring0cl 20526 | . . 3 ⊢ (𝑅 ∈ Ring → 0 ∈ (Base‘𝑅)) |
| 6 | 2, 5 | syl 18 | . 2 ⊢ (𝐹 ∈ 𝐴 → 0 ∈ (Base‘𝑅)) |
| 7 | eqid 2763 | . . 3 ⊢ 0 = 0 | |
| 8 | 1, 3, 4 | abveq0 21105 | . . 3 ⊢ ((𝐹 ∈ 𝐴 ∧ 0 ∈ (Base‘𝑅)) → ((𝐹‘ 0 ) = 0 ↔ 0 = 0 )) |
| 9 | 7, 8 | mpbiri 261 | . 2 ⊢ ((𝐹 ∈ 𝐴 ∧ 0 ∈ (Base‘𝑅)) → (𝐹‘ 0 ) = 0) |
| 10 | 6, 9 | mpdan 700 | 1 ⊢ (𝐹 ∈ 𝐴 → (𝐹‘ 0 ) = 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ‘cfv 6558 0cc0 11227 Basecbs 17416 0gc0g 17639 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 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 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-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 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-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 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-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-fv 6566 df-riota 7400 df-ov 7446 df-oprab 7447 df-mpo 7448 df-map 8877 df-0g 17641 df-mgm 18845 df-sgrp 18937 df-mnd 18953 df-grp 19176 df-ring 20491 df-abv 21096 |
| This theorem is used by: abvdom 21117 abvres 21118 abvcxp 27972 qabvle 27982 ostthlem1 27984 ostth2lem2 27991 ostth3 27995 fiabv 43793 |
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