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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 | . . 3 ⊢ (𝜑 → (𝜓 ↔ 𝜒)) | |
2 | 1 | anbi1d 741 | . 2 ⊢ (𝜑 → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜏))) |
3 | bi2an9.2 | . . 3 ⊢ (𝜃 → (𝜏 ↔ 𝜂)) | |
4 | 3 | anbi2d 740 | . 2 ⊢ (𝜃 → ((𝜒 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
5 | 2, 4 | sylan9bb 736 | 1 ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 384 |
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 197 df-an 386 |
This theorem is referenced by: bi2anan9r 918 rspc2gv 3321 2reu5 3416 ralprg 4234 raltpg 4236 prssg 4350 prsspwg 4355 ssprss 4356 opelopab2a 4990 opelxp 5146 eqrel 5209 eqrelrel 5221 brcog 5288 tpres 6466 dff13 6512 resoprab2 6757 ovig 6782 dfoprab4f 7226 f1o2ndf1 7285 om00el 7656 oeoe 7679 eroveu 7842 endisj 8047 infxpen 8837 dfac5lem4 8949 sornom 9099 ltsrpr 9898 axcnre 9985 axmulgt0 10112 wloglei 10560 mulge0b 10893 addltmul 11268 ltxr 11949 fzadd2 12376 sumsqeq0 12942 rlim 14226 cpnnen 14958 dvds2lem 14994 opoe 15087 omoe 15088 opeo 15089 omeo 15090 gcddvds 15225 dfgcd2 15263 pcqmul 15558 xpsfrnel2 16225 eqgval 17643 frgpuplem 18185 mpfind 19536 2ndcctbss 21258 txbasval 21409 cnmpt12 21470 cnmpt22 21477 prdsxmslem2 22334 ishtpy 22771 bcthlem1 23121 bcth 23126 volun 23313 vitali 23382 itg1addlem3 23465 rolle 23753 mumullem2 24906 lgsquadlem3 25107 lgsquad 25108 2sqlem7 25149 axpasch 25821 wlkson 26552 iswwlksnon 26740 numclwwlkovg 27220 numclwwlkovh 27234 eulplig 27337 hlimi 28045 leopadd 28991 eqrelrd2 29426 isinftm 29735 metidv 29935 scutval 31911 slerec 31923 altopthg 32074 altopthbg 32075 brsegle 32215 finxpreclem3 33230 itg2addnclem3 33463 exan3 34062 exanres 34063 exanres3 34064 eqrel2 34068 prtlem13 34153 dib1dim 36454 pellex 37399 prsprel 41737 uspgrsprf1 41755 uspgrsprfo 41756 |
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