| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > ibar | GIF version | ||
| Description: Introduction of antecedent as conjunct. (Contributed by NM, 5-Dec-1995.) (Revised by NM, 24-Mar-2013.) |
| Ref | Expression |
|---|---|
| ibar | ⊢ (𝜑 → (𝜓 ↔ (𝜑 ∧ 𝜓))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pm3.2 139 | . 2 ⊢ (𝜑 → (𝜓 → (𝜑 ∧ 𝜓))) | |
| 2 | simpr 110 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜓) | |
| 3 | 1, 2 | impbid1 142 | 1 ⊢ (𝜑 → (𝜓 ↔ (𝜑 ∧ 𝜓))) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: biantrur 303 biantrurd 305 anclb 319 pm5.42 320 pm5.32 457 anabs5 579 pm5.33 617 bianabs 619 annotanannot 680 baib 931 baibd 935 anxordi 1449 euan 2143 eueq3dc 3000 ifandc 3681 xpcom 5334 fvopab3g 5778 riota1a 6059 opabfi 7247 funisfsupp 7291 2omap 7319 ctssdccl 7452 2omotaplemap 7624 recmulnqg 7759 ltexprlemloc 7975 mul0eqap 9003 eluz2 9937 rpnegap 10098 elfz2 10429 zmodid2 10803 shftfib 11603 dvdsssfz1 12637 modremain 12714 ballotfilemdifcfz 13278 ctiunctlemudc 13379 issubg 14027 resgrpisgrp 14049 qusecsub 14186 issubrng 14558 issubrg 14580 txcnmpt 15426 reopnap 15699 ellimc3apf 15813 ralrals 17271 ralals 17277 |
| Copyright terms: Public domain | W3C validator |