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| Mirrors > Home > ILE Home > Th. List > ibi | GIF version | ||
| Description: Inference that converts a biconditional implied by one of its arguments, into an implication. (Contributed by NM, 17-Oct-2003.) |
| Ref | Expression |
|---|---|
| ibi.1 | ⊢ (𝜑 → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| ibi | ⊢ (𝜑 → 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ibi.1 | . . 3 ⊢ (𝜑 → (𝜑 ↔ 𝜓)) | |
| 2 | 1 | biimpd 144 | . 2 ⊢ (𝜑 → (𝜑 → 𝜓)) |
| 3 | 2 | pm2.43i 49 | 1 ⊢ (𝜑 → 𝜓) |
| 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 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: ibir 177 pm5.21nii 709 elab3gf 2954 elpwi 3659 elsni 3685 elpr2 3689 elpri 3690 eltpi 3714 snssi 3815 prssi 3829 eloni 4470 limuni2 4492 elxpi 4739 releldmb 4967 relelrnb 4968 elrnmpt2d 4985 elrelimasn 5100 funeu 5349 fneu 5433 fvelima 5693 eloprabi 6356 fo2ndf 6387 elmpom 6398 tfrlem9 6480 ecexr 6702 elqsi 6751 qsel 6776 ecopovsym 6795 ecopovsymg 6798 elpmi 6831 elmapi 6834 pmsspw 6847 brdomi 6915 en1uniel 6973 mapdom1g 7028 dif1en 7061 enomnilem 7328 omnimkv 7346 mkvprop 7348 fodjumkvlemres 7349 enmkvlem 7351 enwomnilem 7359 ltrnqi 7631 peano2nnnn 8063 peano2nn 9145 eliooord 10153 fzrev3i 10313 elfzole1 10381 elfzolt2 10382 bcp1nk 11014 rere 11416 climcl 11833 climcau 11898 fprodcnv 12176 isstruct2im 13082 restsspw 13322 mgmcl 13432 submss 13549 subm0cl 13551 submcl 13552 submmnd 13553 subgsubm 13773 opprnzr 14190 opprdomn 14279 zrhval 14621 istopfin 14714 uniopn 14715 iunopn 14716 inopn 14717 eltpsg 14754 basis1 14761 basis2 14762 eltg4i 14769 lmff 14963 psmetf 15039 psmet0 15041 psmettri2 15042 metflem 15063 xmetf 15064 xmeteq0 15073 xmettri2 15075 cncff 15291 cncfi 15292 limcresi 15380 dvcnp2cntop 15413 sinq34lt0t 15545 lgsdir2lem2 15748 2sqlem9 15843 edgval 15901 uhgrfm 15914 ushgrfm 15915 upgrfen 15938 umgrfen 15948 uspgrfen 15998 usgrfen 15999 wlkcprim 16147 trlsv 16179 isclwwlkni 16202 eupthv 16241 |
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