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| Description: A chained inference from transitive law for logical equivalence. |
| Ref | Expression |
|---|---|
| 3bitr2i.1 |
|
| 3bitr2i.2 |
|
| 3bitr2i.3 |
|
| Ref | Expression |
|---|---|
| 3bitr2i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3bitr2i.1 |
. . 3
| |
| 2 | 3bitr2i.2 |
. . 3
| |
| 3 | 1, 2 | bitr4i 192 |
. 2
|
| 4 | 3bitr2i.3 |
. 2
| |
| 5 | 3, 4 | bitri 189 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pm5.17 728 2eu5 1694 2eu6 1695 exists1 1699 euxfr 2271 rmo4 2278 sspsstri 2543 difin 2658 symdif2OLD 2684 sbssOLD 2805 ssiinOLD 3124 dftr5 3232 pwundif 3394 posn 3418 uniuni 3617 eufromeq4 3642 eufromeq6 3644 reldm0 3987 imadisj 4096 elinisegOLD 4106 asymref2OLD 4122 intirr 4123 dfco2aOLD 4206 resco 4213 funcnv2 4285 funcnv3 4287 fncnv 4290 fun11 4291 fununi 4292 iunfopab 4353 fsn 4618 fnoprv 4757 fparlem1 4892 fparlem2 4893 fparlem3 4894 fparlem4 4895 ixp0x 5229 mapsnen 5299 kmlem4 5726 kmlem12 5734 kmlem14 5736 kmlem15 5737 kmlem16 5738 ltexprlem4 6093 infcvglem1 8277 eirrlem1 8446 ruclem2 8575 istps3 8672 axgroth4 9934 grothprim 9936 dford2 9973 pjtheui 10660 adjbd1o 11447 bnj33OLD 12194 bnj136 12260 bnj134 12270 bnj861 12586 bnj962 12648 bnj1144 12733 bnj1163 12747 bnj1533 12974 bnj849 13110 bnj983 13149 bnj1049 13186 bnj1070 13193 bnj1174 13234 bnj1284 13274 isprm2 13567 axacprim 13583 fundmpss 13629 frxp 13743 wfrlem8 13756 axfelem11 13831 andnand1 13878 and4com 13997 elicc3 15044 compfipin0 15118 is1stc3 15151 ufileu 15255 rnelfmlem 15274 prtlem70 15920 strdif 16478 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 163 |