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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 3584 2reu5 3714 ralprgf 4649 ralprg 4651 raltpg 4653 prssg 4773 prsspwg 4777 ssprss 4778 intprg 4934 opelopab2a 5481 opelxp 5658 eqrel 5731 eqrelrel 5744 brcog 5813 tpres 7145 dff13 7198 cbvmpov 7451 resoprab2 7475 ovig 7502 dfoprab4f 7998 f1o2ndf1 8062 om00el 8501 oeoe 8525 eroveu 8747 endisj 8990 infxpen 9922 dfac5lem4OLD 10036 sornom 10185 ltsrpr 10986 axcnre 11073 axmulgt0 11205 wloglei 11667 mulge0b 12010 addltmul 12375 ltxr 13027 fzadd2 13473 sumsqeq0 14100 ccat0 14497 rlim 15416 cpnnen 16152 dvds2lem 16193 opoe 16288 omoe 16289 opeo 16290 omeo 16291 gcddvds 16428 dfgcd2 16471 pcqmul 16779 xpsfrnel2 17483 eqgval 19104 frgpuplem 19699 mpfind 22068 2ndcctbss 23397 txbasval 23548 cnmpt12 23609 cnmpt22 23616 prdsxmslem2 24471 ishtpy 24925 bcthlem1 25278 bcth 25283 volun 25500 vitali 25568 itg1addlem3 25653 rolle 25948 mumullem2 27144 lgsquadlem3 27347 lgsquad 27348 2sqlem7 27389 scutval 27768 slerec 27787 remulscllem2 28446 axpasch 28963 wlkson 29677 iswwlksnon 29875 wpthswwlks2on 29986 eulplig 30509 hlimi 31212 leopadd 32156 tpssg 32561 brab2d 32632 eqrelrd2 32643 cntzun 33110 isinftm 33212 finexttrb 33771 metidv 33998 satfv1 35506 satfbrsuc 35509 gonarlem 35537 satfv0fvfmla0 35556 satfv1fvfmla1 35566 altopthg 36110 altopthbg 36111 brsegle 36251 bj-imdirvallem 37324 finxpreclem3 37537 itg2addnclem3 37813 exan3 38432 exanres 38433 exanres3 38434 eqrel2 38437 sucmapleftuniq 38602 brcoss 38633 brcoss3 38635 brcoels 38637 br1cossxrnres 38650 brcosscnv 38674 prtlem13 39067 dib1dim 41364 f1o2d2 42431 pellex 43019 tfsconcatb0 43528 tfsconcat00 43531 prsprel 47675 uspgrsprf1 48335 uspgrsprfo 48336 brab2ddw2 49017 |
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