| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > anass | GIF version | ||
| Description: Associative law for conjunction. Theorem *4.32 of [WhiteheadRussell] p. 118. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 24-Nov-2012.) |
| Ref | Expression |
|---|---|
| anass | ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 19 | . . 3 ⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → (𝜑 ∧ (𝜓 ∧ 𝜒))) | |
| 2 | 1 | anassrs 400 | . 2 ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒) → (𝜑 ∧ (𝜓 ∧ 𝜒))) |
| 3 | id 19 | . . 3 ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒) → ((𝜑 ∧ 𝜓) ∧ 𝜒)) | |
| 4 | 3 | anasss 399 | . 2 ⊢ ((𝜑 ∧ (𝜓 ∧ 𝜒)) → ((𝜑 ∧ 𝜓) ∧ 𝜒)) |
| 5 | 2, 4 | impbii 126 | 1 ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒) ↔ (𝜑 ∧ (𝜓 ∧ 𝜒))) |
| 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: bianass 469 mpan10 474 an12 561 an32 562 an13 563 an31 564 an4 586 3anass 985 sbidm 1875 4exdistr 1941 2sb5 2012 2sb5rf 2018 sbel2x 2027 r2exf 2525 r19.41 2662 ceqsex3v 2817 ceqsrex2v 2909 rexrab 2940 rexrab2 2944 rexss 3264 inass 3387 difin2 3439 difrab 3451 reupick3 3462 inssdif0im 3532 rexdifpr 3666 rexdifsn 3771 unidif0 4222 bnd2 4228 eqvinop 4300 copsexg 4301 uniuni 4511 rabxp 4725 elvvv 4751 rexiunxp 4833 resopab2 5020 ssrnres 5139 elxp4 5184 elxp5 5185 cnvresima 5186 mptpreima 5190 coass 5215 dff1o2 5544 eqfnfv3 5697 rexsupp 5722 isoini 5905 f1oiso 5913 oprabid 5994 dfoprab2 6010 mpoeq123 6022 mpomptx 6054 resoprab2 6060 ovi3 6101 oprabex3 6232 spc2ed 6337 f1od2 6339 brtpos2 6355 mapsnen 6922 xpsnen 6936 xpcomco 6941 xpassen 6945 ltexpi 7480 enq0enq 7574 enq0tr 7577 prnmaxl 7631 prnminu 7632 genpdflem 7650 ltexprlemm 7743 suplocsrlemb 7949 axaddf 8011 axmulf 8012 rexuz 9731 rexuz2 9732 rexrp 9828 elixx3g 10053 elfz2 10167 fzdifsuc 10233 fzind2 10400 divalgb 12321 gcdass 12421 nnwosdc 12445 lcmass 12492 isprm2 12524 infpn2 12912 fngsum 13305 igsumvalx 13306 issubg3 13613 dfrhm2 14001 ntreq0 14689 tx1cn 14826 tx2cn 14827 blres 14991 metrest 15063 elcncf1di 15136 dedekindicclemicc 15189 fsumdvdsmul 15548 lgsquadlem1 15639 lgsquadlem2 15640 |
| Copyright terms: Public domain | W3C validator |