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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 11367 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7369 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11124 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11390 | . . 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 11333 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7373 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2777 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 (class class class)co 7358 ℂcc 11024 0cc0 11026 + caddc 11029 − cmin 11364 -cneg 11365 |
| 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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-po 5532 df-so 5533 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11168 df-mnf 11169 df-ltxr 11171 df-sub 11366 df-neg 11367 |
| This theorem is referenced by: negdi2 11439 negsubdi2 11440 resubcli 11443 resubcl 11445 negsubi 11459 negsubd 11498 submul2 11577 addneg1mul 11579 mulsub 11580 divsubdir 11835 difgtsumgt 12454 elz2 12506 zsubcl 12533 qsubcl 12881 rexsub 13148 fzsubel 13476 ceim1l 13767 modcyc2 13827 negmod 13839 modsumfzodifsn 13867 expsub 14033 binom2sub 14143 seqshft 15008 resub 15050 imsub 15058 cjsub 15072 cjreim 15083 absdiflt 15241 absdifle 15242 abs2dif2 15257 subcn2 15518 bpoly2 15980 bpoly3 15981 efsub 16025 efi4p 16062 sinsub 16093 cossub 16094 demoivreALT 16126 difmod0 16214 dvdssub 16231 modgcd 16459 gzsubcl 16868 psgnunilem2 19424 cnfldsub 21352 itg1sub 25666 plyremlem 26268 sineq0 26489 logneg2 26580 ang180lem2 26776 asinsin 26858 atanneg 26873 atancj 26876 atanlogadd 26880 atanlogsublem 26881 atanlogsub 26882 2efiatan 26884 tanatan 26885 cosatan 26887 atans2 26897 dvatan 26901 zetacvg 26981 wilthlem1 27034 wilthlem2 27035 basellem8 27054 lgsvalmod 27283 cnnvm 30757 cncph 30894 hvsubdistr2 31125 lnfnsubi 32121 subfacval2 35381 itg2addnclem3 37870 lcmineqlem1 42279 pellexlem6 43072 pell14qrdich 43107 rmxm1 43172 rmym1 43173 addsubeq0 47538 omoeALTV 47927 omeoALTV 47928 emoo 47946 emee 47948 zlmodzxzequap 48741 flsubz 48764 |
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