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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 7361 distrnqg 7755 recmulnqg 7759 ltexnqq 7776 enq0tr 7802 distrnq0 7827 genpdflem 7875 distrlem1prl 7950 distrlem1pru 7951 divmulasscomap 9029 muldivdirap 9040 divmuldivap 9045 prime 9750 eluz2 9937 raluz2 9989 elixx1 10310 elixx3g 10314 elioo2 10334 elioo5 10346 elicc4 10353 iccneg 10402 icoshft 10403 elfz1 10427 elfz 10428 elfz2 10429 elfzm11 10509 elfz2nn0 10530 elfzo2 10568 elfzo3 10582 lbfzo0 10603 fzind2 10669 zmodid2 10804 swrdccatin1 11513 swrdccat 11523 redivap 11655 imdivap 11662 maxleast 11996 cosmul 12531 bitsval 12729 bitsmod 12742 bitscmp 12744 dfgcd2 12810 lcmneg 12871 coprmgcdb 12885 divgcdcoprmex 12899 cncongr1 12900 cncongr2 12901 difsqpwdvds 13140 elgz 13173 xpsfrnel 13718 xpsfrnel2 13720 mgmsscl 13734 ismhm 13821 mhmpropd 13826 issubm 13832 issubg 14029 eqglact 14081 eqgid 14082 ecqusaddd 14094 ecqusaddcl 14095 isrng 14317 issrg 14353 srglmhm 14381 srgrmhm 14382 isring 14388 ringlghm 14450 dfrhm2 14545 issubrng 14591 issubrg3 14639 islmod 14711 islssm 14778 islssmg 14779 lsspropdg 14852 qusmulrng 14953 lmbrf 15407 uptx 15466 txcn 15467 xmetec 15629 bl2ioo 15742 lgsmodeq 16330 lgsmulsqcoprm 16331 uspgredg2v 16628 wksfval 16729 wlkeq 16761 isclwwlk 16801 clwwlkbp 16802 isclwwlknx 16823 clwwlknp 16824 clwwlkn1 16825 clwwlkn2 16828 clwwlknonel 16839 findset 17137 |
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