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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 11369 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
| 2 | 1 | oveq2i 7367 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
| 4 | 0cn 11125 | . . 3 ⊢ 0 ∈ ℂ | |
| 5 | addsubass 11392 | . . 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 11335 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
| 9 | 8 | oveq1d 7371 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
| 10 | 3, 6, 9 | 3eqtr2d 2776 | 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 7356 ℂcc 11025 0cc0 11027 + caddc 11030 − cmin 11366 -cneg 11367 |
| 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 2184 ax-ext 2707 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3060 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 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 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-er 8632 df-en 8883 df-dom 8884 df-sdom 8885 df-pnf 11170 df-mnf 11171 df-ltxr 11173 df-sub 11368 df-neg 11369 |
| This theorem is referenced by: negdi2 11441 negsubdi2 11442 resubcli 11445 resubcl 11447 negsubi 11461 negsubd 11500 submul2 11579 addneg1mul 11581 mulsub 11582 divsubdir 11837 difgtsumgt 12479 elz2 12531 zsubcl 12558 qsubcl 12907 rexsub 13174 fzsubel 13503 ceim1l 13795 modcyc2 13855 negmod 13867 modsumfzodifsn 13895 expsub 14061 binom2sub 14171 seqshft 15036 resub 15078 imsub 15086 cjsub 15100 cjreim 15111 absdiflt 15269 absdifle 15270 abs2dif2 15285 subcn2 15546 bpoly2 16011 bpoly3 16012 efsub 16056 efi4p 16093 sinsub 16124 cossub 16125 demoivreALT 16157 difmod0 16245 dvdssub 16262 modgcd 16490 gzsubcl 16900 psgnunilem2 19459 cnfldsub 21369 itg1sub 25664 plyremlem 26258 sineq0 26476 logneg2 26567 ang180lem2 26762 asinsin 26844 atanneg 26859 atancj 26862 atanlogadd 26866 atanlogsublem 26867 atanlogsub 26868 2efiatan 26870 tanatan 26871 cosatan 26873 atans2 26883 dvatan 26887 zetacvg 26966 wilthlem1 27019 wilthlem2 27020 basellem8 27039 lgsvalmod 27267 cnnvm 30741 cncph 30878 hvsubdistr2 31109 lnfnsubi 32105 subfacval2 35357 itg2addnclem3 37982 lcmineqlem1 42456 pellexlem6 43250 pell14qrdich 43285 rmxm1 43350 rmym1 43351 addsubeq0 47732 omoeALTV 48149 omeoALTV 48150 emoo 48168 emee 48170 zlmodzxzequap 48963 flsubz 48986 |
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