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| Description: Import-export theorem. Part of Theorem *4.87 of [WhiteheadRussell] p. 122. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 24-Mar-2013.) |
| Ref | Expression |
|---|---|
| impexp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pm3.3 261 |
. 2
| |
| 2 | pm3.31 262 |
. 2
| |
| 3 | 1, 2 | impbii 126 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 |
| This theorem is used by: imp4a 349 exp4a 366 imdistan 448 pm5.3 479 pm4.87 563 nan 703 pm4.14dc 902 pm5.6dc 938 2sb6 2044 2sb6rf 2050 2exsb 2069 mor 2129 eu2 2131 moanim 2161 r2alf 2567 r3al 2594 r19.23t 2658 ceqsralt 2849 rspc2gv 2942 ralrab 2987 ralrab2 2991 euind 3013 reu2 3014 reu3 3016 rmo4 3019 rmo3f 3023 reuind 3031 rmo2ilem 3142 rmo3 3144 ralss 3314 rabss 3325 raldifb 3369 unissb 3965 elintrab 3982 ssintrab 3993 dftr5 4232 repizf2lem 4298 reusv3 4606 tfi 4729 raliunxp 4921 fununi 5449 dff13 5974 dfsmo2 6558 tfr1onlemaccex 6619 tfrcllemaccex 6632 qliftfun 6891 nnnninfeq2 7469 prime 9745 raluz 9978 raluz2 9979 ralrp 10076 facwordi 11178 modfsummod 12225 nnwosdc 12816 isprm2 12895 isprm4 12897 metcnp 15613 limcdifap 15763 bdcriota 16909 nnnninfex 17065 dfrals2 17130 dfralseu2 17164 |
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