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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 390 pm5.32rd 451 pm5.32ri 455 anbi2ci 459 anbi12ci 461 bianassc 470 mpan10 474 an12 563 an32 564 an13 565 an42 589 andir 827 rbaib 929 rbaibr 930 ifptru 998 ifpfal 999 3anrot 1010 3ancoma 1012 excxor 1423 xorcom 1433 xordc 1437 xordc1 1438 dfbi3dc 1442 ancomsimp 1486 exancom 1657 19.29r 1670 19.42h 1735 19.42 1736 eu1 2105 moaneu 2157 moanmo 2158 2eu7 2175 eq2tri 2292 r19.28av 2679 r19.29r 2681 r19.42v 2700 rexcomf 2705 rabswap 2723 euxfr2dc 3002 rmo4 3010 reu8 3013 rmo3f 3014 rmo3 3135 incom 3411 difin2 3483 symdifxor 3487 elif 3634 inuni 4267 eqvinop 4359 uniuni 4572 dtruex 4681 elvvv 4813 brinxp2 4817 dmuni 4966 dfres2 5090 dfima2 5103 imadmrn 5111 imai 5118 cnvxp 5181 cnvcnvsn 5239 mptpreima 5256 rnco 5269 unixpm 5298 ressn 5303 xpcom 5309 fncnv 5422 fununi 5424 imadiflem 5435 fnres 5475 fnopabg 5482 dff1o2 5619 eqfnfv3 5777 respreima 5805 fsn 5849 fliftcnv 5968 isoini 5991 spc2ed 6429 brtpos2 6482 tpostpos 6495 tposmpo 6512 nnaord 6742 pmex 6887 elpmg 6898 mapval2 6912 mapsnend 7052 mapsnen 7053 map1 7054 xpsnen 7072 xpcomco 7077 elfi2 7259 supmoti 7284 cnvti 7310 2omotaplemap 7571 elni2 7629 enq0enq 7746 prltlu 7802 prnmaxl 7803 prnminu 7804 nqprrnd 7858 ltpopr 7910 letri3 8354 lesub0 8753 creur 9233 xrletri3 10137 iooneg 10321 iccneg 10322 elfzuzb 10353 fzrev 10418 redivap 11559 imdivap 11566 rersqreu 11713 lenegsq 11780 climrecvg1n 12033 fisumcom2 12124 fsumcom 12125 fprodcom2fi 12312 fprodcom 12313 gcdcom 12669 bezoutlembi 12701 dfgcd2 12710 lcmcom 12761 isprm2 12814 ballotfilem2 13142 unennn 13148 dfrhm2 14299 issubrng 14344 ntreq0 14997 restopn2 15048 ismet2 15219 blres 15299 metrest 15371 dedekindicclemicc 15497 sincosq3sgn 15693 lgsdi 15910 lgsquadlem3 15952 2lgslem1a 15961 clwwlkn1 16413 clwwlkn2 16416 iseupthf1o 16443 eupth2lem2dc 16454 |
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