| 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 563 an32 564 an13 565 an31 566 an4 588 3anass 1008 sbidm 1899 4exdistr 1965 2sb5 2036 2sb5rf 2042 sbel2x 2051 r2exf 2550 r19.41 2688 ceqsex3v 2846 ceqsrex2v 2938 rexrab 2969 rexrab2 2973 rexss 3294 inass 3417 difin2 3469 difrab 3481 reupick3 3492 inssdif0im 3562 rexdifpr 3697 rexdifsn 3805 unidif0 4257 bnd2 4263 eqvinop 4335 copsexg 4336 uniuni 4548 rabxp 4763 elvvv 4789 rexiunxp 4872 resopab2 5060 ssrnres 5179 elxp4 5224 elxp5 5225 cnvresima 5226 mptpreima 5230 coass 5255 dff1o2 5588 eqfnfv3 5746 rexsupp 5771 isoini 5959 f1oiso 5967 oprabid 6050 dfoprab2 6068 mpoeq123 6080 mpomptx 6112 resoprab2 6118 ovi3 6159 oprabex3 6291 spc2ed 6398 f1od2 6400 brtpos2 6417 mapsnen 6986 xpsnen 7005 xpcomco 7010 xpassen 7014 ltexpi 7557 enq0enq 7651 enq0tr 7654 prnmaxl 7708 prnminu 7709 genpdflem 7727 ltexprlemm 7820 suplocsrlemb 8026 axaddf 8088 axmulf 8089 rexuz 9814 rexuz2 9815 rexrp 9911 elixx3g 10136 elfz2 10250 fzdifsuc 10316 fzind2 10486 divalgb 12504 gcdass 12604 nnwosdc 12628 lcmass 12675 isprm2 12707 infpn2 13095 fngsum 13489 igsumvalx 13490 issubg3 13797 dfrhm2 14187 ntreq0 14875 tx1cn 15012 tx2cn 15013 blres 15177 metrest 15249 elcncf1di 15322 dedekindicclemicc 15375 fsumdvdsmul 15734 lgsquadlem1 15825 lgsquadlem2 15826 wlk1walkdom 16229 isclwwlk 16264 isclwwlknx 16286 clwwlknonel 16302 clwwlknon2x 16305 iseupthf1o 16318 |
| Copyright terms: Public domain | W3C validator |