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Theorem elpwi 3730
Description: Subset relation implied by membership in a power class. (Contributed by NM, 17-Feb-2007.)
Assertion
Ref Expression
elpwi (A BA B)

Proof of Theorem elpwi
StepHypRef Expression
1 elpwg 3729 . 2 (A B → (A BA B))
21ibi 232 1 (A BA B)
Colors of variables: wff setvar class
Syntax hints:  wi 4   wcel 1710   wss 3257  cpw 3722
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-v 2861  df-nin 3211  df-compl 3212  df-in 3213  df-ss 3259  df-pw 3724
This theorem is referenced by:  elpwid  3731  elelpwi  3732
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