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| Mirrors > Home > ILE Home > Th. List > npcan | Unicode version | ||
| Description: Cancellation law for subtraction. (Contributed by NM, 10-May-2004.) (Revised by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| npcan |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subcl 8526 |
. . 3
| |
| 2 | simpr 110 |
. . 3
| |
| 3 | 1, 2 | addcomd 8478 |
. 2
|
| 4 | pncan3 8535 |
. . 3
| |
| 5 | 4 | ancoms 268 |
. 2
|
| 6 | 3, 5 | eqtrd 2271 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| 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 4249 ax-pow 4311 ax-pr 4346 ax-setind 4684 ax-resscn 8271 ax-1cn 8272 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-distr 8283 ax-i2m1 8284 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 |
| 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 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-sub 8500 |
| This theorem is used by: addsubass 8537 npncan 8548 nppcan 8549 nnpcan 8550 subcan2 8552 nnncan 8562 npcand 8642 nn1suc 9325 zlem1lt 9705 zltlem1 9706 peano5uzti 9758 nummac 9830 uzp1 9965 peano2uzr 9994 fz01en 10469 fzsuc2 10496 fseq1m1p1 10512 fzoss2 10591 fzoaddel2 10618 fzosplitsnm1 10637 fzosplitprm1 10663 modfzo0difsn 10845 seq3m1 10923 monoord2 10936 ser3mono 10937 seqf1oglem1 10969 seqf1oglem2 10970 expm1t 11017 expubnd 11046 bcm1k 11212 bcn2 11216 hashfzo 11277 hashfibclem 11296 hashf1 11301 seq3coll 11308 swrdfv2 11449 swrdspsleq 11453 swrdlsw 11455 ccatpfx 11487 shftlem 11595 shftfvalg 11597 shftfval 11600 iserex 12121 serf0 12134 fsumm1 12199 mptfzshft 12225 binomlem 12266 binom1dif 12270 isumsplit 12274 dvdssub2 12618 4sqlem19 13208 1259lem4 13265 1259prm 13267 ppiqub 16194 perfect1 16196 lgsquad2lem1 16298 clwwlknonex2lem2 16777 clwwlknonex2 16778 |
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