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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 11381 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7381 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11138 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11404 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
| 6 | 4, 5 | mp3an2 1452 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
| 7 | simpl 482 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
| 8 | 7 | addridd 11347 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7385 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2778 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 (class class class)co 7370 ℂcc 11038 0cc0 11040 + caddc 11043 − cmin 11378 -cneg 11379 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 ax-resscn 11097 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-mulcom 11104 ax-addass 11105 ax-mulass 11106 ax-distr 11107 ax-i2m1 11108 ax-1ne0 11109 ax-1rid 11110 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 ax-pre-lttri 11114 ax-pre-lttrn 11115 ax-pre-ltadd 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-po 5542 df-so 5543 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-riota 7327 df-ov 7373 df-oprab 7374 df-mpo 7375 df-er 8647 df-en 8898 df-dom 8899 df-sdom 8900 df-pnf 11182 df-mnf 11183 df-ltxr 11185 df-sub 11380 df-neg 11381 |
| This theorem is referenced by: negdi2 11453 negsubdi2 11454 resubcli 11457 resubcl 11459 negsubi 11473 negsubd 11512 submul2 11591 addneg1mul 11593 mulsub 11594 divsubdir 11849 difgtsumgt 12468 elz2 12520 zsubcl 12547 qsubcl 12895 rexsub 13162 fzsubel 13490 ceim1l 13781 modcyc2 13841 negmod 13853 modsumfzodifsn 13881 expsub 14047 binom2sub 14157 seqshft 15022 resub 15064 imsub 15072 cjsub 15086 cjreim 15097 absdiflt 15255 absdifle 15256 abs2dif2 15271 subcn2 15532 bpoly2 15994 bpoly3 15995 efsub 16039 efi4p 16076 sinsub 16107 cossub 16108 demoivreALT 16140 difmod0 16228 dvdssub 16245 modgcd 16473 gzsubcl 16882 psgnunilem2 19441 cnfldsub 21369 itg1sub 25683 plyremlem 26285 sineq0 26506 logneg2 26597 ang180lem2 26793 asinsin 26875 atanneg 26890 atancj 26893 atanlogadd 26897 atanlogsublem 26898 atanlogsub 26899 2efiatan 26901 tanatan 26902 cosatan 26904 atans2 26914 dvatan 26918 zetacvg 26998 wilthlem1 27051 wilthlem2 27052 basellem8 27071 lgsvalmod 27300 cnnvm 30776 cncph 30913 hvsubdistr2 31144 lnfnsubi 32140 subfacval2 35409 itg2addnclem3 37953 lcmineqlem1 42428 pellexlem6 43220 pell14qrdich 43255 rmxm1 43320 rmym1 43321 addsubeq0 47685 omoeALTV 48074 omeoALTV 48075 emoo 48093 emee 48095 zlmodzxzequap 48888 flsubz 48911 |
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