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| Mirrors > Home > ILE Home > Th. List > ancom | GIF version | ||
| Description: Commutative law for conjunction. Theorem *4.3 of [WhiteheadRussell] p. 118. (Contributed by NM, 25-Jun-1998.) (Proof shortened by Wolf Lammen, 4-Nov-2012.) |
| Ref | Expression |
|---|---|
| ancom | ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pm3.22 265 | . 2 ⊢ ((𝜑 ∧ 𝜓) → (𝜓 ∧ 𝜑)) | |
| 2 | pm3.22 265 | . 2 ⊢ ((𝜓 ∧ 𝜑) → (𝜑 ∧ 𝜓)) | |
| 3 | 1, 2 | impbii 126 | 1 ⊢ ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: ancomd 267 ancomsd 269 biancomi 270 biancomd 271 pm4.71r 394 pm5.32rd 455 pm5.32ri 459 anbi2ci 463 anbi12ci 465 bianassc 474 mpan10 478 an12 567 an32 568 an13 569 an42 593 andir 831 rbaib 933 rbaibr 934 ifptru 1002 ifpfal 1003 3anrot 1014 3ancoma 1016 excxor 1427 xorcom 1437 xordc 1441 xordc1 1442 dfbi3dc 1446 ancomsimp 1490 exancom 1661 19.29r 1674 19.42h 1739 19.42 1740 eu1 2111 moaneu 2163 moanmo 2164 2eu7 2181 eq2tri 2298 r19.28av 2687 r19.29r 2689 r19.42v 2708 rexcomf 2713 rabswap 2731 euxfr2dc 3011 rmo4 3019 reu8 3022 rmo3f 3023 rmo3 3144 incom 3421 difin2 3493 symdifxor 3497 elif 3649 inuni 4286 eqvinop 4378 uniuni 4592 dtruex 4701 elvvv 4833 brinxp2 4837 dmuni 4986 dfres2 5110 dfima2 5123 imadmrn 5131 imai 5138 cnvxp 5201 cnvcnvsn 5259 mptpreima 5276 rnco 5289 unixpm 5318 ressn 5323 xpcom 5329 fncnv 5442 fununi 5444 imadiflem 5455 fnres 5495 fnopabg 5502 dff1o2 5639 eqfnfv3 5799 respreima 5827 fsn 5871 fliftcnv 5991 isoini 6014 spc2ed 6459 brtpos2 6512 tpostpos 6525 tposmpo 6542 nnaord 6772 pmex 6917 elpmg 6928 mapval2 6949 mapsnend 7089 mapsnen 7090 map1 7091 xpsnen 7109 xpcomco 7114 elfi2 7296 supmoti 7323 cnvti 7349 2omotaplemap 7613 elni2 7671 enq0enq 7788 prltlu 7844 prnmaxl 7845 prnminu 7846 nqprrnd 7900 ltpopr 7952 letri3 8396 lesub0 8797 creur 9279 xrletri3 10185 iooneg 10369 iccneg 10370 elfzuzb 10401 fzrev 10469 redivap 11617 imdivap 11624 rersqreu 11772 lenegsq 11839 climrecvg1n 12092 fisumcom2 12183 fsumcom 12184 fprodcom2fi 12371 fprodcom 12372 gcdcom 12728 bezoutlembi 12760 dfgcd2 12769 lcmcom 12820 isprm2 12873 ballotfilem2 13206 unennn 13266 dfrhm2 14434 issubrng 14480 ntreq0 15156 restopn2 15207 ismet2 15378 blres 15458 metrest 15530 dedekindicclemicc 15656 sincosq3sgn 15852 lgsdi 16070 lgsquadlem3 16112 2lgslem1a 16121 clwwlkn1 16573 clwwlkn2 16576 iseupthf1o 16603 eupth2lem2dc 16614 |
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