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Related theorems GIF version |
| Description: Introduce a right conjunct to both sides of a logical equivalence. |
| Ref | Expression |
|---|---|
| bi.aa | ⊢ (φ ↔ ψ) |
| Ref | Expression |
|---|---|
| anbi1i | ⊢ ((φ ∧ χ) ↔ (ψ ∧ χ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ancom 333 | . 2 ⊢ ((φ ∧ χ) ↔ (χ ∧ φ)) | |
| 2 | bi.aa | . . 3 ⊢ (φ ↔ ψ) | |
| 3 | 2 | anbi2i 367 | . 2 ⊢ ((χ ∧ φ) ↔ (χ ∧ ψ)) |
| 4 | ancom 333 | . 2 ⊢ ((χ ∧ ψ) ↔ (ψ ∧ χ)) | |
| 5 | 1, 3, 4 | 3bitr 155 | 1 ⊢ ((φ ∧ χ) ↔ (ψ ∧ χ)) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 127 ∧ wa 196 |
| This theorem is referenced by: anbi12i 369 an12 370 anandi 392 bibi2i 460 xor 500 biass 511 prlem2 577 3ancoma 588 an6 638 19.28 751 euanv 1053 sbabel 1189 r19.27av 1293 r19.29 1295 r19.41v 1302 rexcom 1313 reu5 1339 gencbvex 1372 zfrep4 1479 inass 1650 dfun2 1668 symdif2 1690 undif4 1744 difin0ss 1753 copsexg 1902 iunxsn 2034 iunxun 2035 opabid 2099 wefrc 2195 onpwsuc 2315 dfom2 2374 opelxp 2452 xpundir 2462 cbvop 2473 dmres 2584 iss 2599 imasn 2616 elimasn 2617 elxp4 2640 elxp5 2641 dminss 2648 imainss 2649 imaiun 2650 cores 2659 coi1 2665 coass 2667 dffun2 2674 funin 2708 imadif 2714 fcoi1 2765 fcoi2 2766 fcnvres 2768 f1o3 2805 f1ores 2813 f1oco 2816 ffoss 2820 f11o 2821 fv2 2828 tz6.12-1 2842 fvopabn 2873 fopabfv 2894 fsn 2895 dfoprab2 3021 fnoprval 3042 foprval 3043 ec2 3203 snec 3232 oprec 3254 map0e 3266 domen 3284 mapsnen 3334 xpsnen 3339 xpcomen 3343 xpassen 3344 sbthlem9 3357 xpmapenlem5 3395 zfregs 3491 cp 3547 bnd2 3549 aceq5lem1 3558 aceq5lem2 3559 aceq5lem5 3562 kmlem3 3582 zfcndrep 3760 ltexpi 3823 1pr 3911 distrlem5pr 3925 ltexprlem4 3939 reclem1pr 3950 reclem2pr 3951 addcnsr 4047 mulcnsr 4048 ltresr 4052 axaddex 4059 axmulex 4060 axrrecex 4081 lesub0 4341 elnnz 4572 elnn0z 4574 sqrval 4729 infxpidmlem7 4939 infxpidmlem9 4941 ocvalt 5161 spanvalt 5300 hsupval2t 5301 sshjvalt 5321 sshjval3t 5327 hosmvalt 5487 hodmvalt 5488 cvnbtwn3t 5720 cvnbtwn4t 5721 sumdmdi 5785 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 |
| This theorem depends on definitions: df-bi 128 df-an 198 |