Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 3bitr4i | GIF version |
Description: A chained inference from transitive law for logical equivalence. This inference is frequently used to apply a definition to both sides of a logical equivalence. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
3bitr4i.1 | ⊢ (𝜑 ↔ 𝜓) |
3bitr4i.2 | ⊢ (𝜒 ↔ 𝜑) |
3bitr4i.3 | ⊢ (𝜃 ↔ 𝜓) |
Ref | Expression |
---|---|
3bitr4i | ⊢ (𝜒 ↔ 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3bitr4i.2 | . 2 ⊢ (𝜒 ↔ 𝜑) | |
2 | 3bitr4i.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
3 | 3bitr4i.3 | . . 3 ⊢ (𝜃 ↔ 𝜓) | |
4 | 2, 3 | bitr4i 186 | . 2 ⊢ (𝜑 ↔ 𝜃) |
5 | 1, 4 | bitri 183 | 1 ⊢ (𝜒 ↔ 𝜃) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: bibi2d 231 pm4.71 386 pm5.32ri 450 mpan10 465 an31 553 an4 575 or4 760 ordir 806 andir 808 3anrot 967 3orrot 968 3ancoma 969 3orcomb 971 3ioran 977 3anbi123i 1170 3orbi123i 1171 3or6 1301 xorcom 1366 nfbii 1449 19.26-3an 1459 alnex 1475 19.42h 1665 19.42 1666 equsal 1705 sb6 1858 eeeanv 1905 sbbi 1932 sbco3xzyz 1946 sbcom2v 1960 sbel2x 1973 sb8eu 2012 sb8mo 2013 sb8euh 2022 eu1 2024 cbvmo 2039 mo3h 2052 sbmo 2058 eqcom 2141 abeq1 2249 cbvabw 2262 cbvab 2263 clelab 2265 nfceqi 2277 sbabel 2307 ralbii2 2445 rexbii2 2446 r2alf 2452 r2exf 2453 nfraldya 2469 nfrexdya 2470 r3al 2477 r19.41 2586 r19.42v 2588 ralcomf 2592 rexcomf 2593 reean 2599 3reeanv 2601 rabid2 2607 rabbi 2608 reubiia 2615 rmobiia 2620 reu5 2643 rmo5 2646 cbvralf 2648 cbvrexf 2649 cbvreu 2652 cbvrmo 2653 vjust 2687 ceqsex3v 2728 ceqsex4v 2729 ceqsex8v 2731 eueq 2855 reu2 2872 reu6 2873 reu3 2874 rmo4 2877 rmo3f 2881 2rmorex 2890 cbvsbcw 2936 cbvsbc 2937 sbccomlem 2983 rmo3 3000 csbabg 3061 cbvralcsf 3062 cbvrexcsf 3063 cbvreucsf 3064 eqss 3112 uniiunlem 3185 ssequn1 3246 unss 3250 rexun 3256 ralunb 3257 elin3 3267 incom 3268 inass 3286 ssin 3298 ssddif 3310 unssdif 3311 difin 3313 invdif 3318 indif 3319 indi 3323 symdifxor 3342 disj3 3415 rexsns 3563 reusn 3594 prss 3676 tpss 3685 eluni2 3740 elunirab 3749 uniun 3755 uni0b 3761 unissb 3766 elintrab 3783 ssintrab 3794 intun 3802 intpr 3803 iuncom 3819 iuncom4 3820 iunab 3859 ssiinf 3862 iinab 3874 iunin2 3876 iunun 3891 iunxun 3892 iunxiun 3894 sspwuni 3897 iinpw 3903 cbvdisj 3916 brun 3979 brin 3980 brdif 3981 dftr2 4028 inuni 4080 repizf2lem 4085 unidif0 4091 ssext 4143 pweqb 4145 otth2 4163 opelopabsbALT 4181 eqopab2b 4201 pwin 4204 unisuc 4335 elpwpwel 4396 sucexb 4413 elnn 4519 xpiundi 4597 xpiundir 4598 poinxp 4608 soinxp 4609 seinxp 4610 inopab 4671 difopab 4672 raliunxp 4680 rexiunxp 4681 iunxpf 4687 cnvco 4724 dmiun 4748 dmuni 4749 dm0rn0 4756 brres 4825 dmres 4840 cnvsym 4922 asymref 4924 codir 4927 qfto 4928 cnvopab 4940 cnvdif 4945 rniun 4949 dminss 4953 imainss 4954 cnvcnvsn 5015 resco 5043 imaco 5044 rnco 5045 coiun 5048 coass 5057 ressn 5079 cnviinm 5080 xpcom 5085 funcnv 5184 funcnv3 5185 fncnv 5189 fun11 5190 fnres 5239 dfmpt3 5245 fnopabg 5246 fintm 5308 fin 5309 fores 5354 dff1o3 5373 fun11iun 5388 f11o 5400 f1ompt 5571 fsn 5592 imaiun 5661 isores2 5714 eqoprab2b 5829 opabex3d 6019 opabex3 6020 dfopab2 6087 dfoprab3s 6088 fmpox 6098 tpostpos 6161 dfsmo2 6184 qsid 6494 mapval2 6572 mapsncnv 6589 elixp2 6596 ixpin 6617 xpassen 6724 diffitest 6781 supmoti 6880 eqinfti 6907 distrnqg 7195 ltbtwnnq 7224 distrnq0 7267 nqprrnd 7351 ltresr 7647 elznn0nn 9068 xrnemnf 9564 xrnepnf 9565 elioomnf 9751 elxrge0 9761 elfzuzb 9800 fzass4 9842 elfz2nn0 9892 elfzo2 9927 elfzo3 9940 lbfzo0 9958 fzind2 10016 rexfiuz 10761 fisumcom2 11207 prodmodc 11347 infssuzex 11642 isbasis2g 12212 tgval2 12220 ntreq0 12301 txuni2 12425 isms2 12623 bdceq 13040 |
Copyright terms: Public domain | W3C validator |