| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8532 |
. . 3
| |
| 2 | simpr 110 |
. . 3
| |
| 3 | 1, 2 | addcomd 8484 |
. 2
|
| 4 | pncan3 8541 |
. . 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 4251 ax-pow 4313 ax-pr 4348 ax-setind 4686 ax-resscn 8277 ax-1cn 8278 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-addcom 8285 ax-addass 8287 ax-distr 8289 ax-i2m1 8290 ax-0id 8293 ax-rnegex 8294 ax-cnre 8296 |
| 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 8506 |
| This theorem is used by: addsubass 8543 npncan 8554 nppcan 8555 nnpcan 8556 subcan2 8558 nnncan 8568 npcand 8648 nn1suc 9332 zlem1lt 9712 zltlem1 9713 peano5uzti 9765 nummac 9837 uzp1 9972 peano2uzr 10001 fz01en 10476 fzsuc2 10503 fseq1m1p1 10519 fzoss2 10598 fzoaddel2 10625 fzosplitsnm1 10644 fzosplitprm1 10670 modfzo0difsn 10853 seq3m1 10931 monoord2 10944 ser3mono 10945 seqf1oglem1 10977 seqf1oglem2 10978 expm1t 11025 expubnd 11054 bcm1k 11220 bcn2 11224 hashfzo 11285 hashfibclem 11304 hashf1 11309 seq3coll 11316 swrdfv2 11457 swrdspsleq 11461 swrdlsw 11463 ccatpfx 11495 shftlem 11603 shftfvalg 11605 shftfval 11608 iserex 12130 serf0 12143 fsumm1 12208 mptfzshft 12234 binomlem 12275 binom1dif 12279 isumsplit 12283 dvdssub2 12627 4sqlem19 13217 1259lem4 13274 1259prm 13276 ppiqub 16293 perfect1 16298 lgsquad2lem1 16405 clwwlknonex2lem2 16884 clwwlknonex2 16885 |
| Copyright terms: Public domain | W3C validator |