| 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 9710 zltlem1 9711 peano5uzti 9764 nummac 9836 uzp1 9971 peano2uzr 10000 fz01en 10475 fzsuc2 10502 fseq1m1p1 10518 fzoss2 10597 fzoaddel2 10624 fzosplitsnm1 10643 fzosplitprm1 10669 modfzo0difsn 10852 seq3m1 10930 monoord2 10943 ser3mono 10944 seqf1oglem1 10976 seqf1oglem2 10977 expm1t 11024 expubnd 11053 bcm1k 11219 bcn2 11223 hashfzo 11284 hashfibclem 11303 hashf1 11308 seq3coll 11315 swrdfv2 11456 swrdspsleq 11460 swrdlsw 11462 ccatpfx 11494 shftlem 11602 shftfvalg 11604 shftfval 11607 iserex 12129 serf0 12142 fsumm1 12207 mptfzshft 12233 binomlem 12274 binom1dif 12278 isumsplit 12282 dvdssub2 12626 4sqlem19 13216 1259lem4 13273 1259prm 13275 ppiqub 16310 perfect1 16315 lgsquad2lem1 16422 clwwlknonex2lem2 16901 clwwlknonex2 16902 |
| Copyright terms: Public domain | W3C validator |