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| Mirrors > Home > ILE Home > Th. List > 3anass | GIF version | ||
| Description: Associative law for triple conjunction. (Contributed by NM, 8-Apr-1994.) |
| Ref | Expression |
|---|---|
| 3anass | ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-3an 1011 | . 2 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ ((𝜑 ∧ 𝜓) ∧ 𝜒)) | |
| 2 | anass 405 | . 2 ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒))) | |
| 3 | 1, 2 | bitri 184 | 1 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒))) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∧ wa 104 ↔ wb 105 ∧ w3a 1009 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: 3anrot 1014 3anan12 1021 anandi3 1022 3biant1d 1396 3exdistr 1971 r3al 2594 ceqsex2 2863 ceqsex3v 2865 ceqsex4v 2866 ceqsex6v 2867 ceqsex8v 2868 eldifpr 3736 rexdifpr 3737 trel3 4237 sowlin 4465 dff1o4 5647 mpoxopovel 6512 dfsmo2 6558 ecopovtrn 6906 ecopovtrng 6909 elixp2 6984 elixp 6987 mptelixpg 7016 eqinfti 7360 distrnqg 7754 recmulnqg 7758 ltexnqq 7775 enq0tr 7801 distrnq0 7826 genpdflem 7874 distrlem1prl 7949 distrlem1pru 7950 divmulasscomap 9026 muldivdirap 9037 divmuldivap 9042 prime 9745 eluz2 9927 raluz2 9979 elixx1 10299 elixx3g 10303 elioo2 10323 elioo5 10335 elicc4 10342 iccneg 10391 icoshft 10392 elfz1 10416 elfz 10417 elfz2 10418 elfzm11 10498 elfz2nn0 10519 elfzo2 10557 elfzo3 10571 lbfzo0 10592 fzind2 10658 zmodid2 10789 swrdccatin1 11497 swrdccat 11507 redivap 11639 imdivap 11646 maxleast 11979 cosmul 12512 bitsval 12710 bitsmod 12723 bitscmp 12725 dfgcd2 12791 lcmneg 12852 coprmgcdb 12866 divgcdcoprmex 12880 cncongr1 12881 cncongr2 12882 difsqpwdvds 13117 elgz 13150 xpsfrnel 13665 xpsfrnel2 13667 mgmsscl 13681 ismhm 13768 mhmpropd 13773 issubm 13779 issubg 13976 eqglact 14028 eqgid 14029 ecqusaddd 14041 ecqusaddcl 14042 isrng 14233 issrg 14269 srglmhm 14297 srgrmhm 14298 isring 14304 ringlghm 14366 dfrhm2 14461 issubrng 14507 issubrg3 14555 islmod 14627 islssm 14694 islssmg 14695 lsspropdg 14768 qusmulrng 14869 lmbrf 15316 uptx 15375 txcn 15376 xmetec 15538 bl2ioo 15651 lgsmodeq 16164 lgsmulsqcoprm 16165 uspgredg2v 16462 wksfval 16563 wlkeq 16595 isclwwlk 16635 clwwlkbp 16636 isclwwlknx 16657 clwwlknp 16658 clwwlkn1 16659 clwwlkn2 16662 clwwlknonel 16673 findset 16971 |
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