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Mirrors > Home > MPE Home > Th. List > mtbir | Structured version Visualization version Unicode version |
Description: An inference from a biconditional, related to modus tollens. (Contributed by NM, 15-Nov-1994.) (Proof shortened by Wolf Lammen, 14-Oct-2012.) |
Ref | Expression |
---|---|
mtbir.1 | |
mtbir.2 |
Ref | Expression |
---|---|
mtbir |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mtbir.1 | . 2 | |
2 | mtbir.2 | . . 3 | |
3 | 2 | bicomi 214 | . 2 |
4 | 1, 3 | mtbi 312 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 |
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 197 |
This theorem is referenced by: fal 1490 nemtbir 2889 ru 3434 pssirr 3707 indifdir 3883 noel 3919 npss0OLD 4015 iun0 4576 0iun 4577 br0 4701 vprc 4796 iin0 4839 nfnid 4897 opelopabsb 4985 0nelxp 5143 0nelxpOLD 5144 0xp 5199 nrelv 5244 dm0 5339 cnv0 5535 co02 5649 nlim0 5783 snsn0non 5846 imadif 5973 0fv 6227 snnexOLD 6967 iprc 7101 tfr2b 7492 tz7.44lem1 7501 tz7.48-3 7539 canth2 8113 pwcdadom 9038 canthp1lem2 9475 pwxpndom2 9487 adderpq 9778 mulerpq 9779 0ncn 9954 ax1ne0 9981 pnfnre 10081 mnfnre 10082 inelr 11010 xrltnr 11953 fzouzdisj 12504 lsw0 13352 fprodn0f 14722 eirr 14933 ruc 14972 aleph1re 14974 sqrt2irr 14979 sadc0 15176 1nprm 15392 3prm 15406 prmrec 15626 meet0 17137 join0 17138 odhash 17989 00lsp 18981 cnfldfunALT 19759 zringndrg 19838 zfbas 21700 ustn0 22024 zclmncvs 22948 lhop 23779 dvrelog 24383 axlowdimlem13 25834 ntrl2v2e 27018 konigsberglem4 27117 avril1 27319 helloworld 27321 topnfbey 27325 vsfval 27488 dmadjrnb 28765 xrge00 29686 esumrnmpt2 30130 measvuni 30277 sibf0 30396 ballotlem4 30560 signswch 30638 bnj521 30805 3pm3.2ni 31594 elpotr 31686 dfon2lem7 31694 poseq 31750 nosgnn0 31811 sltsolem1 31826 linedegen 32250 mont 32408 subsym1 32426 limsucncmpi 32444 bj-ru1 32933 bj-0nel1 32940 bj-pinftynrr 33109 bj-minftynrr 33113 bj-pinftynminfty 33114 finxp0 33228 poimirlem30 33439 diophren 37377 eqneltri 39246 stoweidlem44 40261 fourierdlem62 40385 salexct2 40557 aisbnaxb 41078 dandysum2p2e4 41165 257prm 41473 fmtno4nprmfac193 41486 139prmALT 41511 31prm 41512 127prm 41515 nnsum4primeseven 41688 nnsum4primesevenALTV 41689 0nodd 41810 2nodd 41812 1neven 41932 2zrngnring 41952 ex-gt 42469 alsi-no-surprise 42542 |
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