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Related theorems GIF version |
| Description: Infer an implication from a logical equivalence. |
| Ref | Expression |
|---|---|
| biimp.1 | ⊢ (φ ↔ ψ) |
| Ref | Expression |
|---|---|
| biimp | ⊢ (φ → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | biimp.1 | . 2 ⊢ (φ ↔ ψ) | |
| 2 | bi1 130 | . 2 ⊢ ((φ ↔ ψ) → (φ → ψ)) | |
| 3 | 1, 2 | ax-mp 6 | 1 ⊢ (φ → ψ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: bicomi 150 bitr 151 imbi2i 160 imbi1i 161 negbii 162 mpbi 164 sylib 173 sylbi 174 syl5ib 181 syl6ib 185 bisyl7 189 bisyl8 190 bicon1i 193 pm2.62 210 orel1 212 pm3.26bd 259 pm3.27bd 263 sylanb 344 sylan2b 347 anbi2i 367 bimsc1 557 syl3an1b 622 syl3an2b 623 syl3an3b 624 mpgbi 685 stdpc5 739 19.25 763 bisb 855 exmoeu 1039 eupickb 1056 cleq1 1107 eleq2 1150 moeq 1431 ssel 1502 ss0 1727 snsspr 1853 moabex 1868 elinti 1974 iunpw 2040 trel 2048 pocl 2132 wefrc 2195 ordsson 2242 limsuclem 2360 dflim3 2368 peano2 2391 dmsnop 2547 dmxp 2552 coi2 2666 nfunv 2693 funun 2700 funimass1 2712 f1o2 2804 f1ocnv 2811 f1o00 2823 fsn2 2896 tz7.49c 2998 1stval 3089 2ndval 3090 1st2val 3097 elqsi 3228 0nelqs 3234 bren2 3293 pw2en 3348 canth2 3381 mapdom2lem 3388 limenpsi 3400 php4 3412 unfilem1 3438 preleq 3454 inf3lem2 3465 r1tr 3498 rankr1 3518 ac6lem 3575 kmlem6 3585 fodom 3613 isinfcard 3692 iscard3 3693 alephprc 3698 divdivdivt 4265 add20 4329 posex 4422 cru 4529 nn0ge0i 4559 elnn0nn 4593 seqlem2 4663 nn0opthlem2 4723 ruclem8 4892 ruclem24 4908 ruclem27 4911 ruclem28 4912 infxpidmlem8 4940 normpyth 5090 omlsilem 5249 pjch 5269 shmods 5363 chlubi 5393 mdbr3 5729 mdbr4 5730 ssmd1 5734 mdsymlem1 5776 mdsymlem3 5778 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 |