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| Description: Deduce a commuted implication from a logical equivalence. |
| Ref | Expression |
|---|---|
| biimpd.1 |
|
| Ref | Expression |
|---|---|
| biimpcd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | biimpd.1 |
. . 3
| |
| 2 | 1 | biimpd 170 |
. 2
|
| 3 | 2 | com12 14 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: biimpac 462 nbn2 790 3impexp 1286 3impexpbicom 1287 ax16 1579 ax16i 1647 nelneq 1985 nelneq2 1986 nelne 2100 psssstr 2716 disjsnOLD 3090 difsn 3125 mosubopt 3551 tz7.7 3684 limsssuc 3934 nnsuc 3969 peano5 3975 asymref2OLD 4311 ssimaex 4729 chfnrn 4775 ffnfv 4801 cbvfo 4861 elopabi 5059 eloprabi 5060 odi 5258 ereldm 5343 eceqopreq 5372 pssnn 5628 sbcim2g 5841 zorn2lem6 5955 alephval3 6051 prub 6250 prnmadd 6252 prlem936 6307 letr 6695 ssxrOLD 6715 xrletr 6739 snunioolem 7583 facwordi 8196 climsupi 8415 dscmet 9196 isga 9450 dif1card 10177 fiuni 10219 fiiu2 10220 hmeobc 10239 ismgm 10367 ismnd2 10392 pjpj0i 10888 5oalem6 11239 eigorthi 11400 adjbd1o 11655 atcvatlem 11957 mdsymlem3 11977 dmdbr7ati 11996 isprm2 13775 coprm 13782 fundmpss 13836 ordsucuniel 13863 axbday 14012 axfelem16 14046 axfelem17 14047 altopelaltxp 14099 fnoprvpop 14338 fiiu 14344 ref4w 14370 eloi 14400 repcpwti 14503 prjmapcp2 14515 nZdef 14527 cur1vald 14547 dutos1 14626 ltlga 14729 fgsb 14921 fgsb2 14925 altretoplem2 14996 mlteqer 15017 lvsovso 15038 dualcat2 15133 isline1 15294 elfiun 15369 alexsublem2 15438 1stcclb 15471 filssufillem 15570 filcon 15580 f1elima 15719 inficl 15757 fdc1 15813 sstotbnd 15936 heiborlem10 15964 heiborlem11 15965 heiborlem13 15967 heiborlem29 15983 heiborlem41 15995 suctrALT2VD 16660 suctrALT2 16661 3impexpVD 16680 3impexpbicomVD 16681 sbcim2gVD 16699 pltletr 16791 atomnle 17016 hl2atom 17053 cvratlem 17061 ispsubcl2 17356 |
| 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 164 |