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Mirrors > Home > ILE Home > Th. List > pncan | GIF version |
Description: Cancellation law for subtraction. (Contributed by NM, 10-May-2004.) (Revised by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
pncan | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐵) − 𝐵) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr 109 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐵 ∈ ℂ) | |
2 | simpl 108 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → 𝐴 ∈ ℂ) | |
3 | 1, 2 | addcomd 8009 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐵 + 𝐴) = (𝐴 + 𝐵)) |
4 | addcl 7840 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + 𝐵) ∈ ℂ) | |
5 | subadd 8061 | . . 3 ⊢ (((𝐴 + 𝐵) ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (((𝐴 + 𝐵) − 𝐵) = 𝐴 ↔ (𝐵 + 𝐴) = (𝐴 + 𝐵))) | |
6 | 4, 1, 2, 5 | syl3anc 1220 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (((𝐴 + 𝐵) − 𝐵) = 𝐴 ↔ (𝐵 + 𝐴) = (𝐴 + 𝐵))) |
7 | 3, 6 | mpbird 166 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + 𝐵) − 𝐵) = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 = wceq 1335 ∈ wcel 2128 (class class class)co 5818 ℂcc 7713 + caddc 7718 − cmin 8029 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-14 2131 ax-ext 2139 ax-sep 4082 ax-pow 4134 ax-pr 4168 ax-setind 4494 ax-resscn 7807 ax-1cn 7808 ax-icn 7810 ax-addcl 7811 ax-addrcl 7812 ax-mulcl 7813 ax-addcom 7815 ax-addass 7817 ax-distr 7819 ax-i2m1 7820 ax-0id 7823 ax-rnegex 7824 ax-cnre 7826 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1338 df-fal 1341 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ne 2328 df-ral 2440 df-rex 2441 df-reu 2442 df-rab 2444 df-v 2714 df-sbc 2938 df-dif 3104 df-un 3106 df-in 3108 df-ss 3115 df-pw 3545 df-sn 3566 df-pr 3567 df-op 3569 df-uni 3773 df-br 3966 df-opab 4026 df-id 4252 df-xp 4589 df-rel 4590 df-cnv 4591 df-co 4592 df-dm 4593 df-iota 5132 df-fun 5169 df-fv 5175 df-riota 5774 df-ov 5821 df-oprab 5822 df-mpo 5823 df-sub 8031 |
This theorem is referenced by: pncan2 8065 addsubass 8068 pncan3oi 8074 subid1 8078 nppcan2 8089 pncand 8170 nn1m1nn 8834 nnsub 8855 elnn0nn 9115 zrevaddcl 9200 nzadd 9202 elz2 9218 qrevaddcl 9535 irradd 9537 fzrev3 9971 elfzp1b 9981 fzrevral3 9991 fzval3 10085 subsq2 10508 bcp1nk 10618 bcp1m1 10621 bcpasc 10622 shftlem 10698 shftval5 10711 fsump1 11299 mptfzshft 11321 telfsumo 11345 fsumparts 11349 bcxmas 11368 isum1p 11371 geolim 11390 mertenslem2 11415 mertensabs 11416 eftlub 11569 effsumlt 11571 eirraplem 11655 dvdsadd 11711 prmind2 11977 dvexp 13035 abssinper 13127 |
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