ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  0elixp GIF version

Theorem 0elixp 6966
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 4239 . . 3 ∅ ∈ V
21snid 3722 . 2 ∅ ∈ {∅}
3 ixp0x 6963 . 2 X𝑥 ∈ ∅ 𝐴 = {∅}
42, 3eleqtrri 2310 1 ∅ ∈ X𝑥 ∈ ∅ 𝐴
Colors of variables: wff set class
Syntax hints:  wcel 2205  c0 3510  {csn 3691  Xcixp 6935
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-nul 4238  ax-pow 4289  ax-pr 4324
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-br 4112  df-opab 4174  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-fun 5356  df-fn 5357  df-ixp 6936
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator