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Mirrors > Home > ILE Home > Th. List > bitr4i | GIF version |
Description: An inference from transitive law for logical equivalence. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
bitr4i.1 | ⊢ (𝜑 ↔ 𝜓) |
bitr4i.2 | ⊢ (𝜒 ↔ 𝜓) |
Ref | Expression |
---|---|
bitr4i | ⊢ (𝜑 ↔ 𝜒) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bitr4i.1 | . 2 ⊢ (𝜑 ↔ 𝜓) | |
2 | bitr4i.2 | . . 3 ⊢ (𝜒 ↔ 𝜓) | |
3 | 2 | bicomi 130 | . 2 ⊢ (𝜓 ↔ 𝜒) |
4 | 1, 3 | bitri 182 | 1 ⊢ (𝜑 ↔ 𝜒) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: 3bitr2i 206 3bitr2ri 207 3bitr4i 210 3bitr4ri 211 imdistan 432 mpbiran 881 mpbiran2 882 3anrev 929 an6 1252 nfand 1500 19.33b2 1560 nf3 1599 nf4dc 1600 nf4r 1601 equsalh 1654 sb6x 1702 sb5f 1725 sbidm 1772 sb5 1808 sbanv 1810 sborv 1811 sbhb 1857 sb3an 1873 sbel2x 1915 sbal1yz 1918 sbexyz 1920 eu2 1985 2eu4 2034 cleqh 2178 cleqf 2242 dcne 2256 necon3bii 2283 ne3anior 2333 r2alf 2383 r2exf 2384 r19.23t 2467 r19.26-3 2487 r19.26m 2488 r19.43 2512 rabid2 2530 isset 2605 ralv 2616 rexv 2617 reuv 2618 rmov 2619 rexcom4b 2624 ceqsex4v 2642 ceqsex8v 2644 ceqsrexv 2725 ralrab2 2757 rexrab2 2759 reu2 2780 reu3 2782 reueq 2789 2reuswapdc 2794 reuind 2795 sbc3an 2875 rmo2ilem 2903 dfss2 2988 dfss3 2989 dfss3f 2991 ssabral 3065 rabss 3071 ssrabeq 3080 uniiunlem 3082 ddifstab 3104 uncom 3116 inass 3176 indi 3211 difindiss 3218 difin2 3226 reupick3 3249 n0rf 3260 eq0 3266 eqv 3267 vss 3291 disj 3292 disj3 3296 undisj1 3301 undisj2 3302 exsnrex 3435 euabsn2 3461 euabsn 3462 prssg 3542 dfuni2 3603 unissb 3631 elint2 3643 ssint 3652 dfiin2g 3711 iunn0m 3738 iunxun 3756 iunxiun 3757 iinpw 3763 dftr2 3877 dftr5 3878 dftr3 3879 dftr4 3880 vprc 3909 inuni 3930 snelpw 3968 sspwb 3971 opelopabsb 4015 eusv2 4207 orddif 4290 onintexmid 4315 zfregfr 4316 tfi 4323 opthprc 4409 elxp3 4412 xpiundir 4417 elvv 4420 brinxp2 4425 relsn 4461 reliun 4476 inxp 4488 raliunxp 4495 rexiunxp 4496 cnvuni 4539 dm0rn0 4570 elrn 4595 ssdmres 4651 dfres2 4678 dfima2 4690 args 4714 cotr 4726 intasym 4729 asymref 4730 intirr 4731 cnv0 4747 xp11m 4779 cnvresima 4830 resco 4845 rnco 4847 coiun 4850 coass 4859 dfiota2 4888 dffun2 4932 dffun6f 4935 dffun4f 4938 dffun7 4948 dffun9 4950 funfn 4951 svrelfun 4984 imadiflem 4998 dffn2 5067 dffn3 5073 fintm 5095 dffn4 5132 dff1o4 5154 brprcneu 5191 eqfnfv3 5288 fnreseql 5298 fsn 5356 abrexco 5419 imaiun 5420 mpt22eqb 5630 elovmpt2 5721 abexex 5773 releldm2 5831 fnmpt2 5848 dftpos4 5901 tfrlem7 5956 0er 6163 eroveu 6220 erovlem 6221 domen 6255 reuen1 6304 ssfilem 6360 dmaddpq 6569 dmmulpq 6570 distrnqg 6577 enq0enq 6621 enq0tr 6624 nqnq0pi 6628 distrnq0 6649 prltlu 6677 prarloc 6693 genpdflem 6697 ltexprlemm 6790 ltexprlemlol 6792 ltexprlemupu 6794 ltexprlemdisj 6796 recexprlemdisj 6820 ltresr 7007 elnnz 8361 dfz2 8420 2rexuz 8670 eluz2b1 8688 elxr 8850 elixx1 8920 elioo2 8944 elioopnf 8990 elicopnf 8992 elfz1 9034 fzdifsuc 9098 fznn 9106 fzp1nel 9121 fznn0 9129 redivap 9761 imdivap 9768 rexanre 10106 climreu 10136 3dvdsdec 10264 3dvds2dec 10265 bezoutlembi 10394 isprm2 10499 isprm3 10500 isprm4 10501 dcdc 10572 bj-vprc 10687 |
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