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Theorem 0elixp 8105
Description: Membership of the empty set in an infinite Cartesian product. (Contributed by Steve Rodriguez, 29-Sep-2006.)
Assertion
Ref Expression
0elixp ∅ ∈ X𝑥 ∈ ∅ 𝐴

Proof of Theorem 0elixp
StepHypRef Expression
1 0ex 4942 . . 3 ∅ ∈ V
21snid 4353 . 2 ∅ ∈ {∅}
3 ixp0x 8102 . 2 X𝑥 ∈ ∅ 𝐴 = {∅}
42, 3eleqtrri 2838 1 ∅ ∈ X𝑥 ∈ ∅ 𝐴
Colors of variables: wff setvar class
Syntax hints:  wcel 2139  c0 4058  {csn 4321  Xcixp 8074
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pr 5055
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-sn 4322  df-pr 4324  df-op 4328  df-br 4805  df-opab 4865  df-id 5174  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-fun 6051  df-fn 6052  df-ixp 8075
This theorem is referenced by: (None)
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