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| Mirrors > Home > ILE Home > Th. List > impbida | Unicode version | ||
| Description: Deduce an equivalence from two implications. (Contributed by NM, 17-Feb-2007.) |
| Ref | Expression |
|---|---|
| impbida.1 |
|
| impbida.2 |
|
| Ref | Expression |
|---|---|
| impbida |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | impbida.1 |
. . 3
| |
| 2 | 1 | ex 115 |
. 2
|
| 3 | impbida.2 |
. . 3
| |
| 4 | 3 | ex 115 |
. 2
|
| 5 | 2, 4 | impbid 129 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: biadanid 618 eqrdav 2230 funfvbrb 5760 f1ocnv2d 6227 1stconst 6386 2ndconst 6387 cnvf1o 6390 ersymb 6716 swoer 6730 erth 6748 pw2f1odclem 7020 enen1 7026 enen2 7027 domen1 7028 domen2 7029 xpmapenlem 7035 fidifsnen 7057 fundmfibi 7137 f1dmvrnfibi 7143 ordiso2 7234 omniwomnimkv 7366 enwomnilem 7368 nninfwlpoimlemginf 7375 pw1if 7443 exmidapne 7479 infregelbex 9832 fzsplit2 10285 fseq1p1m1 10329 elfz2nn0 10347 btwnzge0 10561 modqsubdir 10656 zesq 10921 hashprg 11073 rereb 11441 abslt 11666 absle 11667 maxleastb 11792 maxltsup 11796 xrltmaxsup 11835 xrmaxltsup 11836 iserex 11917 mptfzshft 12021 fsumrev 12022 fprodrev 12198 dvdsadd2b 12419 nn0ob 12487 bitsfzo 12534 dfgcd3 12599 dfgcd2 12603 dvdsmulgcd 12614 lcmgcdeq 12673 isprm5 12732 qden1elz 12795 issubmnd 13543 mhmf1o 13571 subsubm 13584 resmhm2b 13590 grpinvid1 13653 grpinvid2 13654 subsubg 13802 ssnmz 13816 ghmf1 13878 kerf1ghm 13879 ghmf1o 13880 conjnmzb 13885 0unit 14162 rhmf1o 14201 subsubrng 14247 subrgunit 14272 subsubrg 14278 islss3 14412 islss4 14415 lspsnel6 14441 lspsneq0b 14460 dflidl2rng 14514 cncnp 14973 xmetxpbl 15251 dedekindicc 15376 coseq0q4123 15577 coseq0negpitopi 15579 relogeftb 15608 relogbcxpbap 15708 upgr2wlkdc 16247 2omap 16645 pw1map 16647 pwf1oexmid 16651 isomninnlem 16685 apdiff 16703 iswomninnlem 16705 ismkvnnlem 16708 redcwlpolemeq1 16710 |
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