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Theorem xpsn 7069
Description: The Cartesian product of two singletons is the singleton consisting in the associated ordered pair. (Contributed by NM, 4-Nov-2006.)
Hypotheses
Ref Expression
xpsn.1 𝐴 ∈ V
xpsn.2 𝐵 ∈ V
Assertion
Ref Expression
xpsn ({𝐴} × {𝐵}) = {⟨𝐴, 𝐵⟩}

Proof of Theorem xpsn
StepHypRef Expression
1 xpsn.1 . 2 𝐴 ∈ V
2 xpsn.2 . 2 𝐵 ∈ V
3 xpsng 7067 . 2 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → ({𝐴} × {𝐵}) = {⟨𝐴, 𝐵⟩})
41, 2, 3mp2an 692 1 ({𝐴} × {𝐵}) = {⟨𝐴, 𝐵⟩}
Colors of variables: wff setvar class
Syntax hints:   = wceq 1541  wcel 2111  Vcvv 3436  {csn 4571  cop 4577   × cxp 5609
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5229  ax-nul 5239  ax-pr 5365
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-reu 3347  df-rab 3396  df-v 3438  df-dif 3900  df-un 3902  df-ss 3914  df-nul 4279  df-if 4471  df-sn 4572  df-pr 4574  df-op 4578  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5506  df-xp 5617  df-rel 5618  df-cnv 5619  df-co 5620  df-dm 5621  df-rn 5622  df-fun 6478  df-fn 6479  df-f 6480  df-f1 6481  df-fo 6482  df-f1o 6483
This theorem is referenced by:  dfmpt  7072  fpar  8041  mapsnconst  8811  ixpsnf1o  8857  dju1dif  10059  infdju1  10076  s1co  14735  mat1f1o  22388  txdis  23542  pt1hmeo  23716  utop2nei  24160  utop3cls  24161  imasdsf1olem  24283  ex-xp  30408  elrgspnlem4  33204  poimirlem3  37663  poimirlem4  37664  poimirlem9  37669  poimirlem28  37688  grposnOLD  37922  dib0  41203  imaf1hom  49140  setc1ocofval  49526  diag1f1olem  49565
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