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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 10873 | . . . 4 ⊢ -𝐵 = (0 − 𝐵) | |
2 | 1 | oveq2i 7167 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵)) |
3 | 2 | a1i 11 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 + (0 − 𝐵))) |
4 | 0cn 10633 | . . 3 ⊢ 0 ∈ ℂ | |
5 | addsubass 10896 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 0 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) | |
6 | 4, 5 | mp3an2 1445 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 + (0 − 𝐵))) |
7 | simpl 485 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
8 | 7 | addid1d 10840 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 0) = 𝐴) |
9 | 8 | oveq1d 7171 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 0) − 𝐵) = (𝐴 − 𝐵)) |
10 | 3, 6, 9 | 3eqtr2d 2862 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 (class class class)co 7156 ℂcc 10535 0cc0 10537 + caddc 10540 − cmin 10870 -cneg 10871 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-po 5474 df-so 5475 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-er 8289 df-en 8510 df-dom 8511 df-sdom 8512 df-pnf 10677 df-mnf 10678 df-ltxr 10680 df-sub 10872 df-neg 10873 |
This theorem is referenced by: negdi2 10944 negsubdi2 10945 resubcli 10948 resubcl 10950 negsubi 10964 negsubd 11003 submul2 11080 addneg1mul 11082 mulsub 11083 divsubdir 11334 difgtsumgt 11951 elz2 12000 zsubcl 12025 qsubcl 12368 rexsub 12627 fzsubel 12944 ceim1l 13216 modcyc2 13276 negmod 13285 modsumfzodifsn 13313 expsub 13478 binom2sub 13582 seqshft 14444 resub 14486 imsub 14494 cjsub 14508 cjreim 14519 absdiflt 14677 absdifle 14678 abs2dif2 14693 subcn2 14951 bpoly2 15411 bpoly3 15412 efsub 15453 efi4p 15490 sinsub 15521 cossub 15522 demoivreALT 15554 dvdssub 15654 modgcd 15880 gzsubcl 16276 psgnunilem2 18623 cnfldsub 20573 itg1sub 24310 plyremlem 24893 sineq0 25109 logneg2 25198 ang180lem2 25388 asinsin 25470 atanneg 25485 atancj 25488 atanlogadd 25492 atanlogsublem 25493 atanlogsub 25494 2efiatan 25496 tanatan 25497 cosatan 25499 atans2 25509 dvatan 25513 zetacvg 25592 wilthlem1 25645 wilthlem2 25646 basellem8 25665 lgsvalmod 25892 cnnvm 28459 cncph 28596 hvsubdistr2 28827 lnfnsubi 29823 subfacval2 32434 itg2addnclem3 34960 2xp3dxp2ge1d 39117 pellexlem6 39451 pell14qrdich 39486 rmxm1 39551 rmym1 39552 addsubeq0 43516 omoeALTV 43870 omeoALTV 43871 emoo 43889 emee 43891 zlmodzxzequap 44574 flsubz 44597 |
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