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| Mirrors > Home > ILE Home > Th. List > imbi1i | GIF version | ||
| Description: Introduce a consequent to both sides of a logical equivalence. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 17-Sep-2013.) |
| Ref | Expression |
|---|---|
| imbi1i.1 | ⊢ (𝜑 ↔ 𝜓) |
| Ref | Expression |
|---|---|
| imbi1i | ⊢ ((𝜑 → 𝜒) ↔ (𝜓 → 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imbi1i.1 | . 2 ⊢ (𝜑 ↔ 𝜓) | |
| 2 | imbi1 236 | . 2 ⊢ ((𝜑 ↔ 𝜓) → ((𝜑 → 𝜒) ↔ (𝜓 → 𝜒))) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ((𝜑 → 𝜒) ↔ (𝜓 → 𝜒)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ 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: imbi12i 239 ancomsimp 1485 sbrim 2008 sbal1yz 2053 sbmo 2138 mo4f 2139 moanim 2153 necon4addc 2471 necon1bddc 2478 nfraldya 2566 r3al 2575 r19.23t 2639 ceqsralt 2829 ralab 2965 ralrab 2966 euind 2992 reu2 2993 rmo4 2998 rmo3f 3002 rmo4f 3003 reuind 3010 rmo3 3123 dfdif3 3316 raldifb 3346 unss 3380 ralunb 3387 inssdif0im 3561 ssundifim 3577 raaan 3599 pwss 3669 ralsnsg 3707 ralsns 3708 disjsn 3732 snssOLD 3800 snssb 3807 unissb 3924 intun 3960 intpr 3961 dfiin2g 4004 dftr2 4190 repizf2lem 4253 axpweq 4263 zfpow 4267 axpow2 4268 zfun 4533 uniex2 4535 setindel 4638 setind 4639 elirr 4641 en2lp 4654 zfregfr 4674 tfi 4682 raliunxp 4873 dffun2 5338 dffun4 5339 dffun4f 5344 dffun7 5355 funcnveq 5395 fununi 5400 pw1dc0el 7108 fiintim 7128 addnq0mo 7672 mulnq0mo 7673 addsrmo 7968 mulsrmo 7969 prime 9584 raluz2 9818 ralrp 9915 modfsummod 12042 nnwosdc 12633 isprm4 12714 dedekindicclemicc 15385 bdcriota 16538 bj-uniex2 16571 bj-ssom 16591 exmidpeirce 16668 |
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