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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 | pm4.38 636 | . 2 ⊢ (((𝜓 ↔ 𝜒) ∧ (𝜏 ↔ 𝜂)) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) | |
4 | 1, 2, 3 | syl2an 597 | 1 ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 |
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 209 df-an 399 |
This theorem is referenced by: bi2anan9r 638 rspc2gv 3634 2reu5 3751 ralprgf 4632 raltpg 4636 prssg 4754 prsspwg 4758 ssprss 4759 opelopab2a 5424 opelxp 5593 eqrel 5660 eqrelrel 5672 brcog 5739 tpres 6965 dff13 7015 resoprab2 7273 ovig 7298 dfoprab4f 7756 f1o2ndf1 7820 om00el 8204 oeoe 8227 eroveu 8394 endisj 8606 infxpen 9442 dfac5lem4 9554 sornom 9701 ltsrpr 10501 axcnre 10588 axmulgt0 10717 wloglei 11174 mulge0b 11512 addltmul 11876 ltxr 12513 fzadd2 12945 sumsqeq0 13545 ccat0 13931 rlim 14854 cpnnen 15584 dvds2lem 15624 opoe 15714 omoe 15715 opeo 15716 omeo 15717 gcddvds 15854 dfgcd2 15896 pcqmul 16192 xpsfrnel2 16839 eqgval 18331 frgpuplem 18900 mpfind 20322 2ndcctbss 22065 txbasval 22216 cnmpt12 22277 cnmpt22 22284 prdsxmslem2 23141 ishtpy 23578 bcthlem1 23929 bcth 23934 volun 24148 vitali 24216 itg1addlem3 24301 rolle 24589 mumullem2 25759 lgsquadlem3 25960 lgsquad 25961 2sqlem7 26002 axpasch 26729 wlkson 27440 iswwlksnon 27633 wpthswwlks2on 27742 eulplig 28264 hlimi 28967 leopadd 29911 eqrelrd2 30369 cntzun 30697 isinftm 30812 finexttrb 31054 metidv 31134 satfv1 32612 satfbrsuc 32615 gonarlem 32643 satfv0fvfmla0 32662 satfv1fvfmla1 32672 scutval 33267 slerec 33279 altopthg 33430 altopthbg 33431 brsegle 33571 bj-imdirval 34474 finxpreclem3 34676 itg2addnclem3 34947 exan3 35553 exanres 35554 exanres3 35555 eqrel2 35559 brcoss 35678 brcoss3 35680 brcoels 35682 br1cossxrnres 35690 brcosscnv 35714 prtlem13 36006 dib1dim 38303 pellex 39439 ichan 43637 prsprel 43656 uspgrsprf1 44029 uspgrsprfo 44030 |
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