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| Mirrors > Home > MPE Home > Th. List > subeq0d | Structured version Visualization version GIF version | ||
| Description: If the difference between two numbers is zero, they are equal. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| negidd.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| pncand.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| subeq0d.3 | ⊢ (𝜑 → (𝐴 − 𝐵) = 0) |
| Ref | Expression |
|---|---|
| subeq0d | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subeq0d.3 | . 2 ⊢ (𝜑 → (𝐴 − 𝐵) = 0) | |
| 2 | negidd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 3 | pncand.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 4 | subeq0 11393 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵)) | |
| 5 | 2, 3, 4 | syl2anc 584 | . 2 ⊢ (𝜑 → ((𝐴 − 𝐵) = 0 ↔ 𝐴 = 𝐵)) |
| 6 | 1, 5 | mpbid 232 | 1 ⊢ (𝜑 → 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2111 (class class class)co 7352 ℂcc 11010 0cc0 11012 − cmin 11350 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-resscn 11069 ax-1cn 11070 ax-icn 11071 ax-addcl 11072 ax-addrcl 11073 ax-mulcl 11074 ax-mulrcl 11075 ax-mulcom 11076 ax-addass 11077 ax-mulass 11078 ax-distr 11079 ax-i2m1 11080 ax-1ne0 11081 ax-1rid 11082 ax-rnegex 11083 ax-rrecex 11084 ax-cnre 11085 ax-pre-lttri 11086 ax-pre-lttrn 11087 ax-pre-ltadd 11088 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-br 5094 df-opab 5156 df-mpt 5175 df-id 5514 df-po 5527 df-so 5528 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11154 df-mnf 11155 df-ltxr 11157 df-sub 11352 |
| This theorem is referenced by: cru 12123 crre 15027 incexc 15750 bitsinv1lem 16358 4sqlem10 16865 xrsxmet 24731 zdis 24738 dveq0 25938 dvivthlem1 25946 efif1olem4 26487 dquartlem2 26795 lgsdirprm 27275 2sqmod 27380 ipasslem2 30819 constrrtcc 33755 cos9thpiminplylem2 33803 dvasin 37750 dvacos 37751 congabseq 43072 |
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