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| 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 5337 fvopab3g 5781 riota1a 6062 opabfi 7252 funisfsupp 7297 2omap 7325 ctssdccl 7458 2omotaplemap 7630 recmulnqg 7765 ltexprlemloc 7981 mul0eqap 9009 eluz2 9944 rpnegap 10105 elfz2 10436 zmodid2 10811 shftfib 11611 dvdsssfz1 12645 modremain 12722 ballotfilemdifcfz 13286 ctiunctlemudc 13387 issubg 14036 resgrpisgrp 14058 sscntz 14159 qusecsub 14226 issubrng 14617 issubrg 14639 txcnmpt 15511 reopnap 15784 ellimc3apf 15898 bpos 16332 ralrals 17368 ralals 17374 |
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