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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 9028 muldivdirap 9039 divmuldivap 9044 prime 9749 eluz2 9936 raluz2 9988 elixx1 10309 elixx3g 10313 elioo2 10333 elioo5 10345 elicc4 10352 iccneg 10401 icoshft 10402 elfz1 10426 elfz 10427 elfz2 10428 elfzm11 10508 elfz2nn0 10529 elfzo2 10567 elfzo3 10581 lbfzo0 10602 fzind2 10668 zmodid2 10802 swrdccatin1 11511 swrdccat 11521 redivap 11653 imdivap 11660 maxleast 11994 cosmul 12528 bitsval 12726 bitsmod 12739 bitscmp 12741 dfgcd2 12807 lcmneg 12868 coprmgcdb 12882 divgcdcoprmex 12896 cncongr1 12897 cncongr2 12898 difsqpwdvds 13137 elgz 13170 xpsfrnel 13714 xpsfrnel2 13716 mgmsscl 13730 ismhm 13817 mhmpropd 13822 issubm 13828 issubg 14025 eqglact 14077 eqgid 14078 ecqusaddd 14090 ecqusaddcl 14091 isrng 14282 issrg 14318 srglmhm 14346 srgrmhm 14347 isring 14353 ringlghm 14415 dfrhm2 14510 issubrng 14556 issubrg3 14604 islmod 14676 islssm 14743 islssmg 14744 lsspropdg 14817 qusmulrng 14918 lmbrf 15365 uptx 15424 txcn 15425 xmetec 15587 bl2ioo 15700 lgsmodeq 16262 lgsmulsqcoprm 16263 uspgredg2v 16560 wksfval 16661 wlkeq 16693 isclwwlk 16733 clwwlkbp 16734 isclwwlknx 16755 clwwlknp 16756 clwwlkn1 16757 clwwlkn2 16760 clwwlknonel 16771 findset 17069 |
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