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| Mirrors > Home > MPE Home > Th. List > pncan1 | Structured version Visualization version GIF version | ||
| Description: Cancellation law for addition and subtraction with 1. (Contributed by Alexander van der Vekens, 3-Oct-2018.) |
| Ref | Expression |
|---|---|
| pncan1 | ⊢ (𝐴 ∈ ℂ → ((𝐴 + 1) − 1) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 23 | . 2 ⊢ (𝐴 ∈ ℂ → 𝐴 ∈ ℂ) | |
| 2 | 1cnd 11226 | . 2 ⊢ (𝐴 ∈ ℂ → 1 ∈ ℂ) | |
| 3 | 1, 2 | pncand 11594 | 1 ⊢ (𝐴 ∈ ℂ → ((𝐴 + 1) − 1) = 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 (class class class)co 7413 ℂcc 11122 1c1 11125 + caddc 11127 − cmin 11465 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11269 df-mnf 11270 df-ltxr 11272 df-sub 11467 |
| This theorem is used by: nn0split 13698 nn0disj 13699 elfzom1elp1fzo1 13823 sqoddm1div8 14307 wrdlenccats1lenm1 14690 ccats1pfxeq 14783 ltoddhalfle 16451 pwp1fsum 16481 flodddiv4 16505 prmop1 17130 psdpw 22398 cayhamlem1 23091 2lgslem1c 27629 2lgslem3a 27632 wlklenvm1 30081 wwlknp 30311 wwlknlsw 30315 0enwwlksnge1 30332 wlkiswwlks1 30335 wspthsnwspthsnon 30384 wspthsnonn0vne 30385 elwspths2spth 30438 wwlksext2clwwlk 30527 numclwwlk2lem1lem 30822 numclwlk2lem2f 30857 poimirlem4 38373 poimirlem10 38379 poimirlem19 38388 poimirlem28 38397 sumnnodd 46460 iccpartgtprec 48320 fmtnom1nn 48435 fmtnorec1 48440 sfprmdvdsmersenne 48506 proththdlem 48516 41prothprmlem1 48520 ppivalnnprm 48528 dfodd6 48553 evenp1odd 48556 perfectALTVlem1 48637 isubgr3stgrlem2 48883 gpgvtxedg0 48979 altgsumbcALT 49283 fllog2 49498 nnpw2blen 49510 dig2nn1st 49535 nn0sumshdiglemA 49549 nn0sumshdiglemB 49550 aacllem 50772 |
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