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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 1486 sbrim 2009 sbal1yz 2054 sbmo 2139 mo4f 2140 moanim 2154 necon4addc 2473 necon1bddc 2480 nfraldya 2568 r3al 2577 r19.23t 2641 ceqsralt 2831 ralab 2967 ralrab 2968 euind 2994 reu2 2995 rmo4 3000 rmo3f 3004 rmo4f 3005 reuind 3012 rmo3 3125 dfdif3 3319 raldifb 3349 unss 3383 ralunb 3390 inssdif0im 3564 ssundifim 3580 raaan 3602 pwss 3672 ralsnsg 3710 ralsns 3711 disjsn 3735 snssOLD 3803 snssb 3811 unissb 3928 intun 3964 intpr 3965 dfiin2g 4008 dftr2 4194 repizf2lem 4257 axpweq 4267 zfpow 4271 axpow2 4272 zfun 4537 uniex2 4539 setindel 4642 setind 4643 elirr 4645 en2lp 4658 zfregfr 4678 tfi 4686 raliunxp 4877 dffun2 5343 dffun4 5344 dffun4f 5349 dffun7 5360 funcnveq 5400 fununi 5405 pw1dc0el 7146 fiintim 7166 addnq0mo 7710 mulnq0mo 7711 addsrmo 8006 mulsrmo 8007 prime 9623 raluz2 9857 ralrp 9954 modfsummod 12082 nnwosdc 12673 isprm4 12754 dedekindicclemicc 15426 bdcriota 16582 bj-uniex2 16615 bj-ssom 16635 exmidpeirce 16712 |
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