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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 | pm4.38 637 | . 2 ⊢ (((𝜓 ↔ 𝜒) ∧ (𝜏 ↔ 𝜂)) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) | |
| 4 | 1, 2, 3 | syl2an 596 | 1 ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 |
| 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 207 df-an 396 |
| This theorem is referenced by: bi2anan9r 639 rspc2gv 3586 2reu5 3716 ralprgf 4651 ralprg 4653 raltpg 4655 prssg 4775 prsspwg 4779 ssprss 4780 intprg 4936 opelopab2a 5483 opelxp 5660 eqrel 5733 eqrelrel 5746 brcog 5815 tpres 7147 dff13 7200 cbvmpov 7453 resoprab2 7477 ovig 7504 dfoprab4f 8000 f1o2ndf1 8064 om00el 8503 oeoe 8527 eroveu 8751 endisj 8994 infxpen 9926 dfac5lem4OLD 10040 sornom 10189 ltsrpr 10990 axcnre 11077 axmulgt0 11209 wloglei 11671 mulge0b 12014 addltmul 12379 ltxr 13031 fzadd2 13477 sumsqeq0 14104 ccat0 14501 rlim 15420 cpnnen 16156 dvds2lem 16197 opoe 16292 omoe 16293 opeo 16294 omeo 16295 gcddvds 16432 dfgcd2 16475 pcqmul 16783 xpsfrnel2 17487 eqgval 19108 frgpuplem 19703 mpfind 22072 2ndcctbss 23401 txbasval 23552 cnmpt12 23613 cnmpt22 23620 prdsxmslem2 24475 ishtpy 24929 bcthlem1 25282 bcth 25287 volun 25504 vitali 25572 itg1addlem3 25657 rolle 25952 mumullem2 27148 lgsquadlem3 27351 lgsquad 27352 2sqlem7 27393 cutsval 27778 lesrec 27797 remulscllem2 28499 axpasch 29016 wlkson 29730 iswwlksnon 29928 wpthswwlks2on 30039 eulplig 30562 hlimi 31265 leopadd 32209 tpssg 32614 brab2d 32685 eqrelrd2 32696 cntzun 33163 isinftm 33265 finexttrb 33824 metidv 34051 satfv1 35559 satfbrsuc 35562 gonarlem 35590 satfv0fvfmla0 35609 satfv1fvfmla1 35619 altopthg 36163 altopthbg 36164 brsegle 36304 bj-imdirvallem 37387 finxpreclem3 37600 itg2addnclem3 37876 exan3 38498 exanres 38499 exanres3 38500 eqrel2 38503 sucmapleftuniq 38685 brcoss 38716 brcoss3 38718 brcoels 38720 br1cossxrnres 38733 brcosscnv 38757 prtlem13 39150 dib1dim 41447 f1o2d2 42511 pellex 43098 tfsconcatb0 43607 tfsconcat00 43610 prsprel 47754 uspgrsprf1 48414 uspgrsprfo 48415 brab2ddw2 49096 |
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