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Related theorems GIF version |
| Description: An inference from a nested biconditional, related to modus ponens. |
| Ref | Expression |
|---|---|
| mpbii.min | ⊢ ψ |
| mpbii.maj | ⊢ (φ → (ψ ↔ χ)) |
| Ref | Expression |
|---|---|
| mpbii | ⊢ (φ → χ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpbii.min | . 2 ⊢ ψ | |
| 2 | mpbii.maj | . . 3 ⊢ (φ → (ψ ↔ χ)) | |
| 3 | 2 | biimpd 135 | . 2 ⊢ (φ → (ψ → χ)) |
| 4 | 1, 3 | mpi 44 | 1 ⊢ (φ → χ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 |
| This theorem is referenced by: elimh 571 zfext2 1087 ralcom2 1314 vtoclgf 1382 eqvinc 1407 moeq3 1432 mo2icl 1434 sbc2or 1454 eqimss 1548 ssex 1700 un00 1728 elimhyp 1790 elimhyp2v 1791 elimhyp3v 1792 keephyp 1794 keephyp3v 1795 sneqr 1856 preqr1 1872 preq12b 1874 prel12 1875 mosubop 1911 opthwiener 1914 iunpw 2040 syl5breq 2091 so 2152 ordtri3or 2230 eqelsuc 2307 onsucuni 2335 onuninsuc 2356 on0eqelt 2370 elxp5 2641 dfrel2 2660 tz6.12i 2847 fvco 2865 fvopabn 2873 fvopab2 2878 fvelrn 2883 abrexex 2912 isofrlem 2939 tfrlem11 2959 1st2val 3097 oaword1 3154 oalimcl 3162 nnmordi 3188 mapprc 3260 breng 3280 brdomg 3281 idssen 3309 xpsnen 3339 pw2en 3348 sbthlem5 3353 mapdom2lem 3388 ssenen 3399 phplem3 3405 ssfi 3430 fiint 3445 inf5 3472 rankel 3524 r1rankid 3537 rankonid 3538 rankr1id 3539 kmlem5 3584 oncardon 3627 oncardid 3628 iscard 3659 iscard2 3660 carduni 3664 alephnbtwn 3674 alephgeom 3687 cardaleph 3690 iscard3 3693 alephsson 3699 cardcf 3706 axrepndlem1 3738 axunndlem1 3741 axunnd 3742 axpowndlem2 3744 axpowndlem3 3745 axpowndlem4 3746 axpownd 3747 axregndlem2 3749 axinfndlem1 3751 axinfnd 3752 axacndlem4 3756 axacndlem5 3757 axacnd 3758 indpi 3828 recidpq 3865 ltaddpq 3873 muln0 4214 divneq0 4231 ltplus1t 4383 nnsub 4450 creur 4532 creui 4533 elnn0z 4574 elnnz1 4581 elnn0nn 4593 nn0ind 4612 nneo 4719 nnesq 4720 sqrlem6 4736 sqrlem12 4742 sqrth 4757 sqrcl 4758 sqr2irr 4782 replimt 4798 rere 4810 negre 4825 infxpidmlem10 4942 infxpidmlem11 4943 hlimcaui 5141 hsn0elch 5155 omlsilem 5249 pjch 5269 hsupclt 5308 chsupsn 5313 chj00 5408 chabs1t 5432 osum 5538 pjss1co 5633 atcvat4 5775 |
| 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 |