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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 11443 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7421 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11197 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11466 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
| 6 | 4, 5 | mp3an2 1476 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
| 7 | simpl 487 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 8 | 7 | addridd 11409 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7425 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2802 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1568 ∈ wcel 2141 (class class class)co 7410 ℂcc 11097 0cc0 11099 + caddc 11102 − cmin 11440 -cneg 11441 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5556 df-po 5569 df-so 5570 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-ltxr 11247 df-sub 11442 df-neg 11443 |
| This theorem is referenced by: negdi2 11515 negsubdi2 11516 resubcli 11519 resubcl 11521 negsubi 11535 negsubd 11574 submul2 11653 addneg1mul 11655 mulsub 11656 divsubdir 11907 difgtsumgt 12556 elz2 12608 zsubcl 12635 qsubcl 12991 rexsub 13258 fzsubel 13587 ceim1l 13879 modcyc2 13939 negmod 13951 modsumfzodifsn 13979 expsub 14145 binom2sub 14255 seqshft 15121 resub 15177 imsub 15185 cjsub 15199 cjreim 15210 absdiflt 15368 absdifle 15369 abs2dif2 15384 subcn2 15645 bpoly2 16110 bpoly3 16111 efsub 16155 efi4p 16192 sinsub 16223 cossub 16224 demoivreALT 16256 difmod0 16344 dvdssub 16361 modgcd 16589 gzsubcl 16999 psgnunilem2 19564 cnfldsub 21529 itg1sub 25847 plyremlem 26444 sineq0 26665 logneg2 26756 ang180lem2 26951 asinsin 27033 atanneg 27048 atancj 27051 atanlogadd 27055 atanlogsublem 27056 atanlogsub 27057 2efiatan 27059 tanatan 27060 cosatan 27062 atans2 27072 dvatan 27076 zetacvg 27155 wilthlem1 27208 wilthlem2 27209 basellem8 27228 lgsvalmod 27456 cnnvm 31000 cncph 31137 hvsubdistr2 31368 lnfnsubi 32364 subfacval2 35633 itg2addnclem3 38268 lcmineqlem1 42742 pellexlem6 43509 pell14qrdich 43544 rmxm1 43609 rmym1 43610 addsubeq0 47978 omoeALTV 48395 omeoALTV 48396 emoo 48414 emee 48416 zlmodzxzequap 49224 flsubz 49247 |
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