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| Description: Import-export theorem. Part of Theorem *4.87 of [WhiteheadRussell] p. 122. |
| Ref | Expression |
|---|---|
| impexp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-an 242 |
. . 3
| |
| 2 | 1 | imbi1i 203 |
. 2
|
| 3 | expt 159 |
. . 3
| |
| 4 | impt 158 |
. . 3
| |
| 5 | 3, 4 | impbii 174 |
. 2
|
| 6 | 2, 5 | bitri 190 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pm3.3 375 pm3.31 376 imp 377 pm4.14 379 pm4.15 380 pm4.78 381 pm4.87 383 imp3a 388 imp4a 391 ex 402 exp3a 405 exp4a 409 anass 487 pm5.3 494 pm5.6 752 nan 753 impexp3a 1292 2sb6 1726 2sb6rf 1729 2exsb 1742 mo 1787 eu2 1791 moanim 1826 2mo 1851 2eu6 1858 r2al 2136 r3al 2151 r19.23 2206 r19.23OLD 2207 ralrab 2418 euind 2439 reu2 2442 reu3 2444 rmo4 2445 reuind 2450 rabss 2684 inssdif0OLD 2941 unissb 3208 elintrab 3228 dfiin2OLD 3288 iunssOLD 3292 dftr5 3414 axrep5 3433 eufromeq4 3831 ordunisuc2 3926 dfom2 3951 asymref2OLD 4311 fununi 4481 dff13 4850 oaabs 5309 aceq1 5891 iscard2 6006 suppsr3 6376 ralrp 7246 infm3 7263 infmsup 7277 prime 7407 zmin 7432 raluz 7611 raluz2 7612 nnwos 7629 cau4ii 8170 cau5i 8171 cvg2i 8174 cvg3i 8175 facwordi 8196 clm4i 8340 caucvgi 8423 tgss3 8908 islp2 9023 cncnplem3 9053 cncfmet 9183 metcnp4 9248 metcn4 9249 nmobndseqi 9780 axgroth6 10137 grothprim 10141 chsscmi 10745 chcmhi 10746 h1dei 11106 mdsl1i 11893 mdsl2i 11894 elat2 11912 bnj112 12457 bnj115 12459 bnj856 12789 bnj861 12794 bnj947 12846 bnj980 12862 bnj979 12863 bnj1048 12888 bnj1050 12889 bnj1054 12891 bnj1057 12894 bnj1087 12909 bnj1088 12910 bnj1091 12912 bnj1092 12913 bnj580 13301 bnj1049 13394 bnj1070 13401 bnj1171 13439 imim21b 13597 isprm2 13775 axextprim 13785 biimpexp 13815 dffr5 13831 dfon2lem8 13856 predreseq 13890 elicc3 15362 cnfillim 15590 flimfcn 15603 fcluscn 15619 fclsfcn 15632 ralrabOLD 15670 lmclim2 15850 lmtlm 15908 heiborlem16 15970 pm11.62 16351 dfvd2 16490 dfvd3 16495 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 |
| This theorem depends on definitions: df-bi 164 df-an 242 |