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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 2233 funfvbrb 5793 f1ocnv2d 6261 1stconst 6419 2ndconst 6420 cnvf1o 6423 ersymb 6783 swoer 6797 erth 6815 pw2f1odclem 7089 enen1 7095 enen2 7096 domen1 7097 domen2 7098 xpmapenlem 7104 fidifsnen 7127 fundmfibi 7207 f1dmvrnfibi 7213 2omap 7271 2omapfi 7273 ordiso2 7328 omniwomnimkv 7460 enwomnilem 7462 nninfwlpoimlemginf 7469 pw1if 7537 exmidapne 7576 infregelbex 9933 fzsplit2 10387 fseq1p1m1 10432 elfz2nn0 10450 btwnzge0 10664 modqsubdir 10759 zesq 11024 hashprg 11177 sseqn 11207 hashfibclem 11210 rereb 11552 abslt 11777 absle 11778 maxleastb 11903 maxltsup 11907 xrltmaxsup 11946 xrmaxltsup 11947 iserex 12028 mptfzshft 12132 fsumrev 12133 fprodrev 12309 dvdsadd2b 12530 nn0ob 12598 bitsfzo 12645 dfgcd3 12710 dfgcd2 12714 dvdsmulgcd 12725 lcmgcdeq 12784 isprm5 12843 qden1elz 12906 issubmnd 13672 mhmf1o 13700 subsubm 13713 resmhm2b 13719 grpinvid1 13782 grpinvid2 13783 subsubg 13931 ssnmz 13945 ghmf1 14007 kerf1ghm 14008 ghmf1o 14009 conjnmzb 14014 0unit 14291 rhmf1o 14330 subsubrng 14376 subrgunit 14401 subsubrg 14407 islss3 14544 islss4 14547 lspsnel6 14573 lspsneq0b 14592 dflidl2rng 14646 cncnp 15112 xmetxpbl 15390 dedekindicc 15515 coseq0q4123 15716 coseq0negpitopi 15718 relogeftb 15747 relogbcxpbap 15847 upgr2wlkdc 16389 pw1map 16786 pwf1oexmid 16790 isomninnlem 16831 apdiff 16849 iswomninnlem 16851 ismkvnnlem 16854 redcwlpolemeq1 16856 |
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