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| Mirrors > Home > MPE Home > Th. List > bi2anan9 | Structured version Visualization version GIF version | ||
| Description: Deduction joining two equivalences to form equivalence of conjunctions. (Contributed by NM, 31-Jul-1995.) |
| Ref | Expression |
|---|---|
| bi2an9.1 | ⊢ (𝜑 → (𝜓 ↔ 𝜒)) |
| bi2an9.2 | ⊢ (𝜃 → (𝜏 ↔ 𝜂)) |
| Ref | Expression |
|---|---|
| bi2anan9 | ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bi2an9.1 | . 2 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
| 2 | bi2an9.2 | . 2 ⊢ (𝜃 → (𝜏 ↔ 𝜂)) | |
| 3 | pm4.38 648 | . 2 ⊢ (((𝜓 ↔ 𝜒) ∧ (𝜏 ↔ 𝜂)) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) | |
| 4 | 1, 2, 3 | syl2an 607 | 1 ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This theorem depends on definitions: df-bi 210 df-an 401 |
| This theorem is referenced by: bi2anan9r 650 rspc2gv 3600 2reu5 3730 ralprgf 4665 ralprg 4667 raltpg 4669 prssg 4789 prsspwg 4793 ssprss 4794 intprg 4950 opelopab2a 5520 brab2d 5523 opelxp 5698 eqrel 5771 eqrelrel 5784 brcog 5853 tpres 7200 dff13 7253 cbvmpov 7506 resoprab2 7530 ovig 7557 dfoprab4f 8053 f1o2ndf1 8117 mpof1o2d 8121 om00el 8561 oeoe 8585 eroveu 8810 endisj 9052 infxpen 9998 sornom 10261 ltsrpr 11062 axcnre 11149 axmulgt0 11284 wloglei 11746 mulge0b 12085 addltmul 12480 ltxr 13140 fzadd2 13587 sumsqeq0 14215 ccat0 14613 rlim 15546 cpnnen 16285 dvds2lem 16326 opoe 16421 omoe 16422 opeo 16423 omeo 16424 gcddvds 16561 dfgcd2 16604 pcqmul 16913 xpsfrnel2 17618 eqgval 19245 frgpuplem 19842 mpfind 22235 2ndcctbss 23581 txbasval 23732 cnmpt12 23793 cnmpt22 23800 prdsxmslem2 24655 ishtpy 25100 bcthlem1 25452 bcth 25457 volun 25673 vitali 25741 itg1addlem3 25826 rolle 26118 mumullem2 27310 lgsquadlem3 27512 lgsquad 27513 2sqlem7 27554 cutsval 27939 lesrec 27958 remulscllem2 28660 elplngid 29022 lnincplng 29024 plngcp 29026 plngrot 29030 nhpmirhp 29038 lnperpexs 29071 ragraghl 29104 brprlng 29143 prlnghpg 29151 prlngmo 29157 axpasch 29232 wlkson 29945 iswwlksnon 30143 wpthswwlks2on 30254 eulplig 30778 hlimi 31481 leopadd 32425 tpssg 32824 eqrelrd2 32902 cntzun 33340 isinftm 33442 finexttrb 34000 metidv 34227 satfv1 35788 satfbrsuc 35791 gonarlem 35819 satfv0fvfmla0 35838 satfv1fvfmla1 35848 altopthg 36392 altopthbg 36393 brsegle 36533 bj-imdirvallem 37746 finxpreclem3 37961 itg2addnclem3 38246 exan3 38873 exanres 38874 exanres3 38875 eqrel2 38878 sucmapleftuniq 39063 brcoss 39094 brcoss3 39096 brcoels 39098 br1cossxrnres 39111 brcosscnv 39135 disjimeceqim2 39378 eldisjim3 39388 prtlem13 39566 dib1dim 41863 pellex 43488 tfsconcatb0 43997 tfsconcat00 44000 prsprel 48159 uspgrsprf1 48835 uspgrsprfo 48836 brab2ddw2 49527 |
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