| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 1483 sbrim 2007 sbal1yz 2052 sbmo 2137 mo4f 2138 moanim 2152 necon4addc 2470 necon1bddc 2477 nfraldya 2565 r3al 2574 r19.23t 2638 ceqsralt 2828 ralab 2964 ralrab 2965 euind 2991 reu2 2992 rmo4 2997 rmo3f 3001 rmo4f 3002 reuind 3009 rmo3 3122 dfdif3 3315 raldifb 3345 unss 3379 ralunb 3386 inssdif0im 3560 ssundifim 3576 raaan 3598 pwss 3666 ralsnsg 3704 ralsns 3705 disjsn 3729 snssOLD 3797 snssb 3804 unissb 3921 intun 3957 intpr 3958 dfiin2g 4001 dftr2 4187 repizf2lem 4249 axpweq 4259 zfpow 4263 axpow2 4264 zfun 4529 uniex2 4531 setindel 4634 setind 4635 elirr 4637 en2lp 4650 zfregfr 4670 tfi 4678 raliunxp 4869 dffun2 5334 dffun4 5335 dffun4f 5340 dffun7 5351 funcnveq 5390 fununi 5395 pw1dc0el 7096 fiintim 7116 addnq0mo 7657 mulnq0mo 7658 addsrmo 7953 mulsrmo 7954 prime 9569 raluz2 9803 ralrp 9900 modfsummod 12009 nnwosdc 12600 isprm4 12681 dedekindicclemicc 15346 bdcriota 16414 bj-uniex2 16447 bj-ssom 16467 |
| Copyright terms: Public domain | W3C validator |