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| Mirrors > Home > ILE Home > Th. List > npcan | GIF version | ||
| Description: Cancellation law for subtraction. (Contributed by NM, 10-May-2004.) (Revised by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| npcan | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) + 𝐵) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subcl 8533 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 − 𝐵) ∈ ℂ) | |
| 2 | simpr 110 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐵 ∈ ℂ) | |
| 3 | 1, 2 | addcomd 8485 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) + 𝐵) = (𝐵 + (𝐴 − 𝐵))) |
| 4 | pncan3 8542 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (𝐵 + (𝐴 − 𝐵)) = 𝐴) | |
| 5 | 4 | ancoms 268 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 + (𝐴 − 𝐵)) = 𝐴) |
| 6 | 3, 5 | eqtrd 2271 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 − 𝐵) + 𝐵) = 𝐴) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 = wceq 1402 ∈ wcel 2209 (class class class)co 6088 ℂcc 8184 + caddc 8189 − cmin 8505 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-setind 4686 ax-resscn 8278 ax-1cn 8279 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-distr 8290 ax-i2m1 8291 ax-0id 8294 ax-rnegex 8295 ax-cnre 8297 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-sub 8507 |
| This theorem is used by: addsubass 8544 npncan 8555 nppcan 8556 nnpcan 8557 subcan2 8559 nnncan 8569 npcand 8649 nn1suc 9333 zlem1lt 9713 zltlem1 9714 peano5uzti 9766 nummac 9838 uzp1 9973 peano2uzr 10002 fz01en 10477 fzsuc2 10504 fseq1m1p1 10520 fzoss2 10599 fzoaddel2 10626 fzosplitsnm1 10645 fzosplitprm1 10671 modfzo0difsn 10854 seq3m1 10932 monoord2 10945 ser3mono 10946 seqf1oglem1 10978 seqf1oglem2 10979 expm1t 11026 expubnd 11055 bcm1k 11221 bcn2 11225 hashfzo 11286 hashfibclem 11305 hashf1 11310 seq3coll 11317 swrdfv2 11458 swrdspsleq 11462 swrdlsw 11464 ccatpfx 11496 shftlem 11604 shftfvalg 11606 shftfval 11609 iserex 12131 serf0 12144 fsumm1 12209 mptfzshft 12235 binomlem 12276 binom1dif 12280 isumsplit 12284 dvdssub2 12628 4sqlem19 13218 1259lem4 13275 1259prm 13277 ppiqub 16305 perfect1 16310 lgsquad2lem1 16417 clwwlknonex2lem2 16896 clwwlknonex2 16897 |
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