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Mirrors > Home > ILE Home > Th. List > impbid1 | Unicode version |
Description: Infer an equivalence from two implications. (Contributed by NM, 6-Mar-2007.) |
Ref | Expression |
---|---|
impbid1.1 | |
impbid1.2 |
Ref | Expression |
---|---|
impbid1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | impbid1.1 | . 2 | |
2 | impbid1.2 | . . 3 | |
3 | 2 | a1i 9 | . 2 |
4 | 1, 3 | impbid 128 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: impbid2 142 iba 298 ibar 299 pm4.81dc 898 pm5.63dc 935 pm4.83dc 940 pm5.71dc 950 19.33b2 1616 19.9t 1629 sb4b 1821 a16gb 1852 euor2 2071 eupickbi 2095 ceqsalg 2749 eqvincg 2845 ddifstab 3249 csbprc 3449 undif4 3466 eqifdc 3549 sssnm 3728 sneqbg 3737 opthpr 3746 elpwuni 3949 ss1o0el1 4170 exmid01 4171 exmidundif 4179 eusv2i 4427 reusv3 4432 iunpw 4452 suc11g 4528 ssxpbm 5033 ssxp1 5034 ssxp2 5035 xp11m 5036 2elresin 5293 mpteqb 5570 f1fveq 5734 f1elima 5735 f1imass 5736 fliftf 5761 nnsucuniel 6454 iserd 6518 ecopovtrn 6589 ecopover 6590 ecopovtrng 6592 ecopoverg 6593 map0g 6645 fopwdom 6793 f1finf1o 6903 mkvprop 7113 addcanpig 7266 mulcanpig 7267 srpospr 7715 readdcan 8029 cnegexlem1 8064 addcan 8069 addcan2 8070 neg11 8140 negreb 8154 add20 8363 cru 8491 mulcanapd 8549 uz11 9479 eqreznegel 9543 lbzbi 9545 xneg11 9761 xnn0xadd0 9794 xsubge0 9808 elioc2 9863 elico2 9864 elicc2 9865 fzopth 9986 2ffzeq 10066 flqidz 10211 addmodlteq 10323 frec2uzrand 10330 expcan 10618 nn0opthd 10624 fz1eqb 10693 cj11 10833 sqrt0 10932 recan 11037 0dvds 11737 dvds1 11776 alzdvds 11777 nn0enne 11824 nn0oddm1d2 11831 nnoddm1d2 11832 divalgmod 11849 gcdeq0 11895 algcvgblem 11960 prmexpb 12060 ennnfonelemim 12294 tgdom 12613 en1top 12618 hmeocnvb 12859 metrest 13047 bj-nnbist 13460 bj-nnbidc 13471 bj-peano4 13672 bj-nn0sucALT 13695 |
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