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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 21050 | . . 3 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| 3 | eqid 2761 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 4 | abv0.z | . . . 4 ⊢ 0 = (0g‘𝑅) | |
| 5 | 3, 4 | ring0cl 20476 | . . 3 ⊢ (𝑅 ∈ Ring → 0 ∈ (Base‘𝑅)) |
| 6 | 2, 5 | syl 18 | . 2 ⊢ (𝐹 ∈ 𝐴 → 0 ∈ (Base‘𝑅)) |
| 7 | eqid 2761 | . . 3 ⊢ 0 = 0 | |
| 8 | 1, 3, 4 | abveq0 21055 | . . 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 2145 ‘cfv 6531 0cc0 11181 Basecbs 17367 0gc0g 17590 Ringcrg 20439 AbsValcabv 21045 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 |
| 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 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-map 8833 df-0g 17592 df-mgm 18796 df-sgrp 18888 df-mnd 18904 df-grp 19127 df-ring 20441 df-abv 21046 |
| This theorem is used by: abvdom 21067 abvres 21068 abvcxp 27924 qabvle 27934 ostthlem1 27936 ostth2lem2 27943 ostth3 27947 fiabv 43562 |
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