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Mirrors > Home > ILE Home > Th. List > biimpri | GIF version |
Description: Infer a converse implication from a logical equivalence. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 16-Sep-2013.) |
Ref | Expression |
---|---|
biimpri.1 | ⊢ (𝜑 ↔ 𝜓) |
Ref | Expression |
---|---|
biimpri | ⊢ (𝜓 → 𝜑) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biimpri.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
2 | 1 | bicomi 131 | . 2 ⊢ (𝜓 ↔ 𝜑) |
3 | 2 | biimpi 119 | 1 ⊢ (𝜓 → 𝜑) |
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-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: sylibr 133 sylbir 134 sylbbr 135 sylbb1 136 sylbb2 137 mpbir 145 syl5bir 152 syl6ibr 161 bitri 183 sylanbr 283 sylan2br 286 simplbi2 383 sylanblrc 413 mtbi 660 pm3.44 705 orbi2i 752 pm2.31 758 dcor 920 rnlem 961 syl3an1br 1256 syl3an2br 1257 syl3an3br 1258 xorbin 1363 3impexpbicom 1415 equveli 1733 sbbii 1739 dveeq2or 1789 exmoeudc 2063 eueq2dc 2861 ralun 3263 undif3ss 3342 ssunieq 3777 a9evsep 4058 dcextest 4503 tfi 4504 peano5 4520 opelxpi 4579 ndmima 4924 iotass 5113 dffo2 5357 dff1o2 5380 resdif 5397 f1o00 5410 ressnop0 5609 fsnunfv 5629 ovid 5895 ovidig 5896 f1stres 6065 f2ndres 6066 rdgon 6291 elixpsn 6637 diffisn 6795 diffifi 6796 unsnfi 6815 snexxph 6846 ordiso2 6928 omp1eomlem 6987 ltexnqq 7240 enq0sym 7264 prarloclem5 7332 nqprloc 7377 nqprl 7383 nqpru 7384 pitonn 7680 axcnre 7713 peano5nnnn 7724 axcaucvglemres 7731 le2tri3i 7896 muldivdirap 8491 peano5nni 8747 0nn0 9016 uzind4 9410 elfz4 9830 eluzfz 9832 ssfzo12bi 10033 ioom 10069 ser0 10318 exp3vallem 10325 hashinfuni 10555 hashxp 10604 nn0abscl 10889 fimaxre2 11030 iserle 11143 climserle 11146 summodclem2a 11182 fsumcl2lem 11199 fsumadd 11207 sumsnf 11210 isumclim3 11224 isumadd 11232 sumsplitdc 11233 fsummulc2 11249 cvgcmpub 11277 isumshft 11291 isumlessdc 11297 trireciplem 11301 geolim 11312 geo2lim 11317 cvgratz 11333 mertenslem2 11337 mertensabs 11338 prodmodclem3 11376 prodmodclem2a 11377 zproddc 11380 ef0lem 11403 efcvgfsum 11410 ege2le3 11414 efcj 11416 efgt1p2 11438 ndvdsadd 11664 gcdsupex 11682 gcdsupcl 11683 ialgrlemconst 11760 divgcdcoprmex 11819 1idssfct 11832 tgcl 12272 txcnp 12479 bj-sucexg 13291 bj-indind 13301 bj-2inf 13307 findset 13314 trilpolemisumle 13406 |
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