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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 4239 sowlin 4467 dff1o4 5650 mpoxopovel 6516 dfsmo2 6562 ecopovtrn 6910 ecopovtrng 6913 elixp2 6988 elixp 6991 mptelixpg 7020 eqinfti 7366 distrnqg 7760 recmulnqg 7764 ltexnqq 7781 enq0tr 7807 distrnq0 7832 genpdflem 7880 distrlem1prl 7955 distrlem1pru 7956 divmulasscomap 9034 muldivdirap 9045 divmuldivap 9050 prime 9756 eluz2 9943 raluz2 9995 elixx1 10316 elixx3g 10320 elioo2 10340 elioo5 10352 elicc4 10359 iccneg 10408 icoshft 10409 elfz1 10433 elfz 10434 elfz2 10435 elfzm11 10515 elfz2nn0 10536 elfzo2 10574 elfzo3 10588 lbfzo0 10609 fzind2 10675 zmodid2 10810 swrdccatin1 11519 swrdccat 11529 redivap 11661 imdivap 11668 maxleast 12002 cosmul 12537 bitsval 12735 bitsmod 12748 bitscmp 12750 dfgcd2 12816 lcmneg 12877 coprmgcdb 12891 divgcdcoprmex 12905 cncongr1 12906 cncongr2 12907 difsqpwdvds 13146 elgz 13179 xpsfrnel 13724 xpsfrnel2 13726 mgmsscl 13740 ismhm 13827 mhmpropd 13832 issubm 13838 issubg 14035 eqglact 14087 eqgid 14088 ecqusaddd 14100 ecqusaddcl 14101 isrng 14340 issrg 14376 srglmhm 14404 srgrmhm 14405 isring 14411 ringlghm 14473 dfrhm2 14570 issubrng 14616 issubrg3 14664 islmod 14736 islssm 14803 islssmg 14804 lsspropdg 14877 qusmulrng 14978 lmbrf 15441 uptx 15500 txcn 15501 xmetec 15663 bl2ioo 15776 lgsmodeq 16369 lgsmulsqcoprm 16370 uspgredg2v 16667 wksfval 16768 wlkeq 16800 isclwwlk 16840 clwwlkbp 16841 isclwwlknx 16862 clwwlknp 16863 clwwlkn1 16864 clwwlkn2 16867 clwwlknonel 16878 findset 17176 |
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