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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 11501 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7420 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11255 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11524 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
| 6 | 4, 5 | mp3an2 1478 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
| 7 | simpl 488 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 8 | 7 | addridd 11467 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7424 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2801 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 (class class class)co 7409 ℂcc 11155 0cc0 11157 + caddc 11160 − cmin 11498 -cneg 11499 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 ax-resscn 11214 ax-1cn 11215 ax-icn 11216 ax-addcl 11217 ax-addrcl 11218 ax-mulcl 11219 ax-mulrcl 11220 ax-mulcom 11221 ax-addass 11222 ax-mulass 11223 ax-distr 11224 ax-i2m1 11225 ax-1ne0 11226 ax-1rid 11227 ax-rnegex 11228 ax-rrecex 11229 ax-cnre 11230 ax-pre-lttri 11231 ax-pre-lttrn 11232 ax-pre-ltadd 11233 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5543 df-po 5556 df-so 5557 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-riota 7366 df-ov 7412 df-oprab 7413 df-mpo 7414 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11302 df-mnf 11303 df-ltxr 11305 df-sub 11500 df-neg 11501 |
| This theorem is used by: negdi2 11573 negsubdi2 11574 resubcli 11577 resubcl 11579 negsubi 11593 negsubd 11632 submul2 11711 addneg1mul 11713 mulsub 11714 divsubdir 11965 difgtsumgt 12614 elz2 12666 zsubcl 12693 qsubcl 13051 rexsub 13318 fzsubel 13648 ceim1l 13941 modcyc2 14001 negmod 14013 modsumfzodifsn 14041 expsub 14207 binom2sub 14317 seqshft 15191 resub 15247 imsub 15255 cjsub 15269 cjreim 15280 absdiflt 15438 absdifle 15439 abs2dif2 15454 subcn2 15715 bpoly2 16176 bpoly3 16177 efsub 16221 efi4p 16258 sinsub 16289 cossub 16290 demoivreALT 16322 difmod0 16410 dvdssub 16427 modgcd 16655 gzsubcl 17065 psgnunilem2 19656 cnfldsub 21653 itg1sub 25977 plyremlem 26574 sineq0 26801 logneg2 26892 ang180lem2 27087 asinsin 27169 atanneg 27184 atancj 27187 atanlogadd 27191 atanlogsublem 27192 atanlogsub 27193 2efiatan 27195 tanatan 27196 cosatan 27198 atans2 27208 dvatan 27212 zetacvg 27291 wilthlem1 27344 wilthlem2 27345 basellem8 27364 lgsvalmod 27592 cnnvm 31203 cncph 31340 hvsubdistr2 31571 lnfnsubi 32567 subfacval2 35867 itg2addnclem3 38505 lcmineqlem1 42993 pellexlem6 43773 pell14qrdich 43808 rmxm1 43873 rmym1 43874 addsubeq0 48282 omoeALTV 48699 omeoALTV 48700 emoo 48718 emee 48720 zlmodzxzequap 49527 flsubz 49550 |
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