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Mirrors > Home > MPE Home > Th. List > 3bitr4ri | Structured version Visualization version GIF version |
Description: A chained inference from transitive law for logical equivalence. (Contributed by NM, 2-Sep-1995.) |
Ref | Expression |
---|---|
3bitr4i.1 | ⊢ (𝜑 ↔ 𝜓) |
3bitr4i.2 | ⊢ (𝜒 ↔ 𝜑) |
3bitr4i.3 | ⊢ (𝜃 ↔ 𝜓) |
Ref | Expression |
---|---|
3bitr4ri | ⊢ (𝜃 ↔ 𝜒) |
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 266 | . 2 ⊢ (𝜑 ↔ 𝜃) |
5 | 1, 4 | bitr2i 264 | 1 ⊢ (𝜃 ↔ 𝜒) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 |
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 |
This theorem is referenced by: pm4.78 604 xor 931 nannan 1443 nic-ax 1589 2sb5 2431 2sb6 2432 2sb5rf 2439 moabs 2489 2mo2 2538 2eu7 2547 2eu8 2548 r3al 2924 r2exlem 3041 risset 3044 r19.35 3065 ralxpxfr2d 3298 reuind 3378 undif3 3847 undif3OLD 3848 unab 3853 inab 3854 inssdif0 3901 ssundif 4004 ralf0 4030 snss 4259 raldifsnb 4266 pwtp 4369 unipr 4385 uni0b 4399 iinuni 4545 reusv2lem4 4798 pwtr 4848 elxp2OLD 5057 opthprc 5089 xpiundir 5097 xpsspw 5156 relun 5158 inopab 5174 difopab 5175 ralxpf 5190 dmiun 5255 inisegn0 5416 rniun 5462 imaco 5557 mptfnf 5928 fnopabg 5930 dff1o2 6055 brprcneu 6096 idref 6403 imaiun 6407 sorpss 6840 opabex3d 7037 opabex3 7038 ovmptss 7145 fnsuppres 7209 rankc1 8616 aceq1 8823 dfac10 8842 fin41 9149 axgroth6 9529 genpass 9710 infm3 10861 prime 11334 elixx3g 12059 elfz2 12204 elfzuzb 12207 rpnnen2lem12 14793 divalgb 14965 1nprm 15230 maxprmfct 15259 vdwmc 15520 imasleval 16024 issubm 17170 issubg3 17435 efgrelexlemb 17986 ist1-2 20961 unisngl 21140 elflim2 21578 isfcls 21623 istlm 21798 isnlm 22289 ishl2 22974 0wlk 26075 0trl 26076 erclwwlkref 26341 erclwwlknref 26353 h1de2ctlem 27798 nonbooli 27894 5oalem7 27903 ho01i 28071 rnbra 28350 cvnbtwn3 28531 chrelat2i 28608 moel 28707 uniinn0 28749 disjex 28787 maprnin 28894 ordtconlem1 29298 esum2dlem 29481 eulerpartgbij 29761 eulerpartlemr 29763 eulerpartlemn 29770 ballotlem2 29877 bnj976 30102 bnj1185 30118 bnj543 30217 bnj571 30230 bnj611 30242 bnj916 30257 bnj1000 30265 bnj1040 30294 iscvm 30495 untuni 30840 dfso3 30856 dffr5 30896 elima4 30924 nofulllem5 31105 brtxpsd3 31173 brbigcup 31175 fixcnv 31185 ellimits 31187 elfuns 31192 brimage 31203 brcart 31209 brimg 31214 brapply 31215 brcup 31216 brcap 31217 dfrdg4 31228 dfint3 31229 ellines 31429 elicc3 31481 bj-ssb1 31822 bj-snsetex 32144 bj-snglc 32150 bj-projun 32175 bj-vjust2 32206 wl-cases2-dnf 32474 poimirlem27 32606 mblfinlem2 32617 iscrngo2 32966 prtlem70 33157 prtlem100 33161 n0el 33164 prtlem15 33178 prter2 33184 lcvnbtwn3 33333 ishlat1 33657 ishlat2 33658 hlrelat2 33707 islpln5 33839 islvol5 33883 pclclN 34195 cdleme0nex 34595 aaitgo 36751 isdomn3 36801 imaiun1 36962 relexp0eq 37012 ntrk1k3eqk13 37368 2sbc6g 37638 2sbc5g 37639 2reu7 39840 2reu8 39841 erclwwlksref 41241 erclwwlksnref 41253 01wlk 41284 alsconv 42345 |
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