| Metamath Proof Explorer |
< Previous
Next >
Related theorems GIF version |
| Description: A deduction from a biconditional, related to modus ponens. |
| Ref | Expression |
|---|---|
| mpbid.min | ⊢ (φ → ψ) |
| mpbid.maj | ⊢ (φ → (ψ ↔ χ)) |
| Ref | Expression |
|---|---|
| mpbid | ⊢ (φ → χ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpbid.min | . 2 ⊢ (φ → ψ) | |
| 2 | mpbid.maj | . . 3 ⊢ (φ → (ψ ↔ χ)) | |
| 3 | 2 | biimpd 135 | . 2 ⊢ (φ → (ψ → χ)) |
| 4 | 1, 3 | mpd 46 | 1 ⊢ (φ → χ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: eqtrd 1128 eleqtrd 1165 eueq2 1429 eueq3 1430 zfrepclf 1477 sseqtrd 1536 3sstr3d 1542 reuhyp 1581 breqtrd 2081 3brtr3d 2086 supsn 2168 ordtri3or 2230 onint0 2262 onnmin 2270 onmindif2 2313 limsssuc 2362 dflim3 2368 finds 2397 tfindsg2 2403 feu 2767 fopab2 2891 fsn2 2896 tfrlem2 2950 tfrlem8 2956 oaass 3163 mapsn 3269 en2d 3303 mapenlem2 3385 xpmapenlem5 3395 phplem5 3407 php3 3411 php4 3412 unfilem1 3438 fiint 3445 rankr1 3518 r1rankid 3537 rankr1id 3539 aceq3 3556 cardnn 3631 cardaleph 3690 cardalephex 3691 axrepnd 3740 ltexprlem7 3942 nnind 4434 nn1suc 4435 nnleltp1t 4448 nnaddm1clt 4452 nnreclt 4522 nn0ltp1let 4556 elnnz1 4581 zaddclt 4590 zltp1let 4597 nn0ind 4612 zmax 4618 zbtwnre 4619 rebtwnz 4620 flidt 4627 seqlem2 4663 seqrn 4673 discrlem2 4714 discrlem3 4715 sqrlem12 4742 sqrlem13 4743 infxpidmlem10 4942 alephexp2 4956 his6 5057 normpyct 5093 shorth 5176 projlem8 5200 projlem13 5205 projlem26 5218 pjthlem10 5234 pjthlem11 5235 choc1 5292 osumlem3 5532 5oalem3 5546 stles 5682 stadd 5687 stadd3 5689 strlem1 5691 strlem3a 5693 strlem5 5696 chrelat 5757 atcvatlem 5770 mdsymlem5 5780 sumdmdi 5785 |
| 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 |