| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5769 f1ocnv2d 6237 1stconst 6395 2ndconst 6396 cnvf1o 6399 ersymb 6759 swoer 6773 erth 6791 pw2f1odclem 7063 enen1 7069 enen2 7070 domen1 7071 domen2 7072 xpmapenlem 7078 fidifsnen 7100 fundmfibi 7180 f1dmvrnfibi 7186 ordiso2 7294 omniwomnimkv 7426 enwomnilem 7428 nninfwlpoimlemginf 7435 pw1if 7503 exmidapne 7539 infregelbex 9893 fzsplit2 10347 fseq1p1m1 10391 elfz2nn0 10409 btwnzge0 10623 modqsubdir 10718 zesq 10983 hashprg 11135 rereb 11503 abslt 11728 absle 11729 maxleastb 11854 maxltsup 11858 xrltmaxsup 11897 xrmaxltsup 11898 iserex 11979 mptfzshft 12083 fsumrev 12084 fprodrev 12260 dvdsadd2b 12481 nn0ob 12549 bitsfzo 12596 dfgcd3 12661 dfgcd2 12665 dvdsmulgcd 12676 lcmgcdeq 12735 isprm5 12794 qden1elz 12857 issubmnd 13605 mhmf1o 13633 subsubm 13646 resmhm2b 13652 grpinvid1 13715 grpinvid2 13716 subsubg 13864 ssnmz 13878 ghmf1 13940 kerf1ghm 13941 ghmf1o 13942 conjnmzb 13947 0unit 14224 rhmf1o 14263 subsubrng 14309 subrgunit 14334 subsubrg 14340 islss3 14475 islss4 14478 lspsnel6 14504 lspsneq0b 14523 dflidl2rng 14577 cncnp 15041 xmetxpbl 15319 dedekindicc 15444 coseq0q4123 15645 coseq0negpitopi 15647 relogeftb 15676 relogbcxpbap 15776 upgr2wlkdc 16318 2omap 16715 pw1map 16717 pwf1oexmid 16721 isomninnlem 16762 apdiff 16780 iswomninnlem 16782 ismkvnnlem 16785 redcwlpolemeq1 16787 |
| Copyright terms: Public domain | W3C validator |