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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 11376 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7370 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11132 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11399 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
| 6 | 4, 5 | mp3an2 1458 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
| 7 | simpl 484 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 8 | 7 | addridd 11342 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7374 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2782 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 = wceq 1548 ∈ wcel 2121 (class class class)co 7359 ℂcc 11032 0cc0 11034 + caddc 11037 − cmin 11373 -cneg 11374 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-po 5528 df-so 5529 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11177 df-mnf 11178 df-ltxr 11180 df-sub 11375 df-neg 11376 |
| This theorem is referenced by: negdi2 11448 negsubdi2 11449 resubcli 11452 resubcl 11454 negsubi 11468 negsubd 11507 submul2 11586 addneg1mul 11588 mulsub 11589 divsubdir 11843 difgtsumgt 12485 elz2 12537 zsubcl 12564 qsubcl 12913 rexsub 13180 fzsubel 13509 ceim1l 13801 modcyc2 13861 negmod 13873 modsumfzodifsn 13901 expsub 14067 binom2sub 14177 seqshft 15042 resub 15084 imsub 15092 cjsub 15106 cjreim 15117 absdiflt 15275 absdifle 15276 abs2dif2 15291 subcn2 15552 bpoly2 16017 bpoly3 16018 efsub 16062 efi4p 16099 sinsub 16130 cossub 16131 demoivreALT 16163 difmod0 16251 dvdssub 16268 modgcd 16496 gzsubcl 16906 psgnunilem2 19464 cnfldsub 21378 itg1sub 25697 plyremlem 26291 sineq0 26509 logneg2 26600 ang180lem2 26795 asinsin 26877 atanneg 26892 atancj 26895 atanlogadd 26899 atanlogsublem 26900 atanlogsub 26901 2efiatan 26903 tanatan 26904 cosatan 26906 atans2 26916 dvatan 26920 zetacvg 26999 wilthlem1 27052 wilthlem2 27053 basellem8 27072 lgsvalmod 27300 cnnvm 30773 cncph 30910 hvsubdistr2 31141 lnfnsubi 32137 subfacval2 35428 itg2addnclem3 38053 lcmineqlem1 42527 pellexlem6 43292 pell14qrdich 43327 rmxm1 43392 rmym1 43393 addsubeq0 47771 omoeALTV 48188 omeoALTV 48189 emoo 48207 emee 48209 zlmodzxzequap 49002 flsubz 49025 |
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