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| Mirrors > Home > MPE Home > Th. List > subid | Structured version Visualization version GIF version | ||
| Description: Subtraction of a number from itself. (Contributed by NM, 8-Oct-1999.) (Revised by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| subid | ⊢ (𝐴 ∈ ℂ → (𝐴 − 𝐴) = 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addrid 11293 | . . 3 ⊢ (𝐴 ∈ ℂ → (𝐴 + 0) = 𝐴) | |
| 2 | 1 | oveq1d 7361 | . 2 ⊢ (𝐴 ∈ ℂ → ((𝐴 + 0) − 𝐴) = (𝐴 − 𝐴)) |
| 3 | 0cn 11104 | . . 3 ⊢ 0 ∈ ℂ | |
| 4 | pncan2 11367 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ) → ((𝐴 + 0) − 𝐴) = 0) | |
| 5 | 3, 4 | mpan2 691 | . 2 ⊢ (𝐴 ∈ ℂ → ((𝐴 + 0) − 𝐴) = 0) |
| 6 | 2, 5 | eqtr3d 2768 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴 − 𝐴) = 0) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2111 (class class class)co 7346 ℂcc 11004 0cc0 11006 + caddc 11009 − cmin 11344 |
| 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 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 |
| 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 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-br 5092 df-opab 5154 df-mpt 5173 df-id 5511 df-po 5524 df-so 5525 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-er 8622 df-en 8870 df-dom 8871 df-sdom 8872 df-pnf 11148 df-mnf 11149 df-ltxr 11151 df-sub 11346 |
| This theorem is referenced by: subeq0 11387 npncan2 11388 neg0 11407 subidi 11432 subidd 11460 addid0 11536 fsum0diag2 15690 mulc1cncf 24826 dvconst 25846 dvef 25912 addsq2reu 27379 colinearalg 28889 axcgrid 28895 0cnv 45786 cnambpcma 47331 line2 48790 |
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