| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > biantrurd | GIF version | ||
| Description: A wff is equivalent to its conjunction with truth. (Contributed by NM, 1-May-1995.) (Proof shortened by Andrew Salmon, 7-May-2011.) |
| Ref | Expression |
|---|---|
| biantrud.1 | ⊢ (𝜑 → 𝜓) |
| Ref | Expression |
|---|---|
| biantrurd | ⊢ (𝜑 → (𝜒 ↔ (𝜓 ∧ 𝜒))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | biantrud.1 | . 2 ⊢ (𝜑 → 𝜓) | |
| 2 | ibar 301 | . 2 ⊢ (𝜓 → (𝜒 ↔ (𝜓 ∧ 𝜒))) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝜒 ↔ (𝜓 ∧ 𝜒))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: mpbirand 441 3anibar 1191 3biant1d 1391 drex1 1846 elrab3t 2961 bnd2 4263 opbrop 4805 opelresi 5024 funcnv3 5392 fnssresb 5444 dff1o5 5592 fneqeql2 5756 fnniniseg2 5770 rexsupp 5771 dffo3 5794 fmptco 5813 fnressn 5839 fconst4m 5873 riota2df 5992 eloprabga 6107 frecabcl 6564 mptelixpg 6902 exmidfodomrlemreseldju 7410 enq0breq 7655 genpassl 7743 genpassu 7744 elnnnn0 9444 peano2z 9514 znnsub 9530 znn0sub 9544 uzin 9788 nn01to3 9850 rpnegap 9920 negelrp 9921 xsubge0 10115 divelunit 10236 elfz5 10251 uzsplit 10326 elfzonelfzo 10474 infssuzex 10492 adddivflid 10551 divfl0 10555 swrdspsleq 11247 2shfti 11391 rexuz3 11550 clim2c 11844 fisumss 11952 bitsmod 12516 bitscmp 12518 bezoutlemmain 12568 nninfctlemfo 12610 dvdsfi 12810 pc2dvds 12902 1arith 12939 xpsfrnel 13426 xpsfrnel2 13428 ghmeqker 13857 lsslss 14394 zndvds 14662 znleval2 14667 eltg3 14780 lmbrf 14938 cnrest2 14959 cnptoprest 14962 cnptoprest2 14963 ismet2 15077 elbl2ps 15115 elbl2 15116 xblpnfps 15121 xblpnf 15122 bdxmet 15224 metcn 15237 cnbl0 15257 cnblcld 15258 mulc1cncf 15312 ellimc3apf 15383 pilem1 15502 wilthlem1 15703 lgsdilem 15755 lgsne0 15766 lgsabs1 15767 lgsquadlem1 15805 lgsquadlem2 15806 isclwwlknx 16266 clwwlkn1 16268 |
| Copyright terms: Public domain | W3C validator |