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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 8525 |
. . 3
| |
| 2 | simpr 110 |
. . 3
| |
| 3 | 1, 2 | addcomd 8477 |
. 2
|
| 4 | pncan3 8534 |
. . 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 8499 |
| This theorem is used by: addsubass 8536 npncan 8547 nppcan 8548 nnpcan 8549 subcan2 8551 nnncan 8561 npcand 8641 nn1suc 9323 zlem1lt 9701 zltlem1 9702 peano5uzti 9754 nummac 9821 uzp1 9956 peano2uzr 9985 fz01en 10459 fzsuc2 10486 fseq1m1p1 10502 fzoss2 10581 fzoaddel2 10608 fzosplitsnm1 10627 fzosplitprm1 10653 modfzo0difsn 10832 seq3m1 10910 monoord2 10923 ser3mono 10924 seqf1oglem1 10956 seqf1oglem2 10957 expm1t 11004 expubnd 11033 bcm1k 11198 bcn2 11202 hashfzo 11263 hashfibclem 11282 hashf1 11287 seq3coll 11294 swrdfv2 11435 swrdspsleq 11439 swrdlsw 11441 ccatpfx 11473 shftlem 11581 shftfvalg 11583 shftfval 11586 iserex 12105 serf0 12118 fsumm1 12183 mptfzshft 12209 binomlem 12250 binom1dif 12254 isumsplit 12258 dvdssub2 12602 4sqlem19 13188 perfect1 16112 lgsquad2lem1 16200 clwwlknonex2lem2 16679 clwwlknonex2 16680 |
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