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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 280 | . 2 ⊢ (𝜑 ↔ 𝜃) |
5 | 1, 4 | bitr2i 278 | 1 ⊢ (𝜃 ↔ 𝜒) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 |
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 209 |
This theorem is referenced by: biadan 817 pm4.78 931 xor 1011 cases2 1042 noranOLD 1527 nic-ax 1674 2sb6 2094 2sb5 2282 dfsb7 2285 2sb5rf 2496 2sb6rf 2497 eu6lem 2658 eu6 2659 2mo2 2732 2eu7 2743 2eu8 2744 euae 2745 ralanidOLD 3169 r3al 3202 risset 3267 r2exlem 3302 ralxpxfr2d 3639 reuind 3744 undif3 4265 unab 4270 inab 4271 n0el 4321 inssdif0 4329 ssundif 4433 ralf0 4457 raldifsnb 4729 pwtp 4833 unipr 4855 uni0b 4864 iinuni 5020 reusv2lem4 5302 pwtr 5345 opthprc 5616 xpiundir 5623 xpsspw 5682 relun 5684 inopab 5701 difopab 5702 ralxpf 5717 dmiun 5782 elidinxp 5911 iresn0n0 5923 inisegn0 5961 rniun 6006 imaco 6104 rnco 6105 mptfnf 6483 fnopabg 6485 dff1o2 6620 brprcneu 6662 idref 6908 imaiun 7004 sorpss 7454 opabex3d 7666 opabex3rd 7667 opabex3 7668 ovmptss 7788 fnsuppres 7857 rankc1 9299 aceq1 9543 dfac10 9563 fin41 9866 axgroth6 10250 genpass 10431 infm3 11600 prime 12064 elixx3g 12752 elfz2 12900 elfzuzb 12903 rpnnen2lem12 15578 divalgb 15755 1nprm 16023 maxprmfct 16053 vdwmc 16314 imasleval 16814 issubm 17968 issubg3 18297 efgrelexlemb 18876 ist1-2 21955 unisngl 22135 elflim2 22572 isfcls 22617 istlm 22793 isnlm 23284 ishl2 23973 ovoliunlem1 24103 erclwwlkref 27798 erclwwlknref 27848 0wlk 27895 h1de2ctlem 29332 nonbooli 29428 5oalem7 29437 ho01i 29605 rnbra 29884 cvnbtwn3 30065 chrelat2i 30142 nelbOLD 30232 moel 30252 difrab2 30261 uniinn0 30302 disjex 30342 maprnin 30467 ordtconnlem1 31167 esum2dlem 31351 eulerpartgbij 31630 eulerpartlemr 31632 eulerpartlemn 31639 ballotlem2 31746 bnj976 32049 bnj1185 32065 bnj543 32165 bnj571 32178 bnj611 32190 bnj916 32205 bnj1000 32213 bnj1040 32244 iscvm 32506 untuni 32935 dfso3 32950 dffr5 32989 elima4 33019 brtxpsd3 33357 brbigcup 33359 fixcnv 33369 ellimits 33371 elfuns 33376 brimage 33387 brcart 33393 brimg 33398 brapply 33399 brcup 33400 brcap 33401 dfrdg4 33412 dfint3 33413 ellines 33613 elicc3 33665 bj-snsetex 34278 bj-snglc 34284 bj-projun 34309 bj-vjust 34349 wl-cases2-dnf 34767 poimirlem27 34934 mblfinlem2 34945 iscrngo2 35290 n0elqs 35598 inxpxrn 35658 eqvrelcoss3 35868 prtlem70 36008 prtlem100 36010 prtlem15 36026 prter2 36032 lcvnbtwn3 36179 ishlat1 36503 ishlat2 36504 hlrelat2 36554 islpln5 36686 islvol5 36730 pclclN 37042 cdleme0nex 37441 aaitgo 39782 isdomn3 39824 imaiun1 40016 relexp0eq 40066 ntrk1k3eqk13 40420 2sbc6g 40767 2sbc5g 40768 2reu7 43330 2reu8 43331 alsconv 44911 |
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