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| Mirrors > Home > MPE Home > Th. List > negsub | Structured version Visualization version GIF version | ||
| Description: Relationship between subtraction and negative. Theorem I.3 of [Apostol] p. 18. (Contributed by NM, 21-Jan-1997.) (Proof shortened by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| negsub | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-neg 11384 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7380 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11142 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11407 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
| 6 | 4, 5 | mp3an2 1451 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
| 7 | simpl 482 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 8 | 7 | addridd 11350 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7384 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2770 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 (class class class)co 7369 ℂcc 11042 0cc0 11044 + caddc 11047 − cmin 11381 -cneg 11382 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11186 df-mnf 11187 df-ltxr 11189 df-sub 11383 df-neg 11384 |
| This theorem is referenced by: negdi2 11456 negsubdi2 11457 resubcli 11460 resubcl 11462 negsubi 11476 negsubd 11515 submul2 11594 addneg1mul 11596 mulsub 11597 divsubdir 11852 difgtsumgt 12471 elz2 12523 zsubcl 12551 qsubcl 12903 rexsub 13169 fzsubel 13497 ceim1l 13785 modcyc2 13845 negmod 13857 modsumfzodifsn 13885 expsub 14051 binom2sub 14161 seqshft 15027 resub 15069 imsub 15077 cjsub 15091 cjreim 15102 absdiflt 15260 absdifle 15261 abs2dif2 15276 subcn2 15537 bpoly2 15999 bpoly3 16000 efsub 16044 efi4p 16081 sinsub 16112 cossub 16113 demoivreALT 16145 difmod0 16233 dvdssub 16250 modgcd 16478 gzsubcl 16887 psgnunilem2 19409 cnfldsub 21339 itg1sub 25643 plyremlem 26245 sineq0 26466 logneg2 26557 ang180lem2 26753 asinsin 26835 atanneg 26850 atancj 26853 atanlogadd 26857 atanlogsublem 26858 atanlogsub 26859 2efiatan 26861 tanatan 26862 cosatan 26864 atans2 26874 dvatan 26878 zetacvg 26958 wilthlem1 27011 wilthlem2 27012 basellem8 27031 lgsvalmod 27260 cnnvm 30661 cncph 30798 hvsubdistr2 31029 lnfnsubi 32025 subfacval2 35167 itg2addnclem3 37660 lcmineqlem1 42010 pellexlem6 42815 pell14qrdich 42850 rmxm1 42916 rmym1 42917 addsubeq0 47290 omoeALTV 47679 omeoALTV 47680 emoo 47698 emee 47700 zlmodzxzequap 48481 flsubz 48504 |
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