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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 737 | . 2 ⊢ (𝜑 → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜏))) |
3 | bi2an9.2 | . . 3 ⊢ (𝜃 → (𝜏 ↔ 𝜂)) | |
4 | 3 | anbi2d 736 | . 2 ⊢ (𝜃 → ((𝜒 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
5 | 2, 4 | sylan9bb 732 | 1 ⊢ ((𝜑 ∧ 𝜃) → ((𝜓 ∧ 𝜏) ↔ (𝜒 ∧ 𝜂))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 |
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 196 df-an 385 |
This theorem is referenced by: bi2anan9r 914 2reu5 3383 ralprg 4181 raltpg 4183 prssg 4290 prsspwg 4295 ssprss 4296 opelopab2a 4915 opelxp 5070 eqrel 5132 eqrelrel 5144 brcog 5210 tpres 6371 dff13 6416 resoprab2 6655 ovig 6680 dfoprab4f 7117 f1o2ndf1 7172 om00el 7543 oeoe 7566 eroveu 7729 endisj 7932 infxpen 8720 dfac5lem4 8832 sornom 8982 ltsrpr 9777 axcnre 9864 axmulgt0 9991 wloglei 10439 mulge0b 10772 addltmul 11145 ltxr 11825 fzadd2 12247 sumsqeq0 12804 rlim 14074 cpnnen 14797 dvds2lem 14832 opoe 14925 omoe 14926 opeo 14927 omeo 14928 gcddvds 15063 dfgcd2 15101 pcqmul 15396 xpsfrnel2 16048 eqgval 17466 frgpuplem 18008 mpfind 19357 2ndcctbss 21068 txbasval 21219 cnmpt12 21280 cnmpt22 21287 prdsxmslem2 22144 ishtpy 22579 bcthlem1 22929 bcth 22934 volun 23120 vitali 23188 itg1addlem3 23271 rolle 23557 mumullem2 24706 lgsquadlem3 24907 lgsquad 24908 2sqlem7 24949 axpasch 25621 usgra2adedgwlkonALT 26144 usgra2wlkspthlem1 26147 el2wlkonotot1 26401 frg2wot1 26584 frg2woteqm 26586 numclwwlkovg 26614 hlimi 27429 leopadd 28375 eqrelrd2 28806 isinftm 29066 metidv 29263 altopthg 31244 altopthbg 31245 brsegle 31385 finxpreclem3 32406 itg2addnclem3 32633 prtlem13 33171 dib1dim 35472 pellex 36417 wlkson 40864 iswwlksnon 41051 frgr2wwlk1 41494 av-numclwwlkovg 41518 av-numclwwlkovh 41531 |
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