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Mirrors > Home > ILE Home > Th. List > dcbid | Unicode version |
Description: Equivalence property for decidability. Deduction form. (Contributed by Jim Kingdon, 7-Sep-2019.) |
Ref | Expression |
---|---|
dcbid.1 |
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Ref | Expression |
---|---|
dcbid |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dcbid.1 |
. . 3
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2 | 1 | notbid 657 |
. . 3
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3 | 1, 2 | orbi12d 783 |
. 2
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4 | df-dc 821 |
. 2
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5 | df-dc 821 |
. 2
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6 | 3, 4, 5 | 3bitr4g 222 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 |
This theorem depends on definitions: df-bi 116 df-dc 821 |
This theorem is referenced by: dcbiit 825 exmidexmid 4128 exmidel 4136 dcdifsnid 6408 finexdc 6804 undifdcss 6819 ssfirab 6830 fidcenumlemrks 6849 difinfsnlem 6992 difinfsn 6993 ctssdclemn0 7003 ctssdccl 7004 ctssdclemr 7005 ctssdc 7006 iswomni 7047 enwomnilem 7050 ltdcpi 7155 enqdc 7193 enqdc1 7194 ltdcnq 7229 fzodcel 9960 exfzdc 10048 sumeq1 11156 sumdc 11159 summodclem2 11183 summodc 11184 zsumdc 11185 fsum3 11188 isumz 11190 isumss 11192 fisumss 11193 isumss2 11194 fsum3cvg2 11195 fsumsersdc 11196 fsumsplit 11208 prodeq1f 11353 prodmodclem2a 11377 prodmodclem2 11378 prodmodc 11379 zproddc 11380 fprodseq 11384 dvdsdc 11537 zdvdsdc 11550 zsupcllemstep 11674 infssuzex 11678 hashdvds 11933 ennnfonelemr 11972 ennnfonelemim 11973 ctinf 11979 ctiunctlemudc 11986 ctiunct 11989 sumdc2 13177 nninfsellemdc 13381 iswomninnlem 13417 redcwlpo 13422 dceqnconst 13423 |
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