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Theorem xpsn 7131
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 7129 . 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 1540  wcel 2108  Vcvv 3459  {csn 4601  cop 4607   × cxp 5652
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2707  ax-sep 5266  ax-nul 5276  ax-pr 5402
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2809  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-reu 3360  df-rab 3416  df-v 3461  df-dif 3929  df-un 3931  df-ss 3943  df-nul 4309  df-if 4501  df-sn 4602  df-pr 4604  df-op 4608  df-br 5120  df-opab 5182  df-mpt 5202  df-id 5548  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538
This theorem is referenced by:  dfmpt  7134  fpar  8115  mapsnconst  8906  ixpsnf1o  8952  dju1dif  10187  infdju1  10204  s1co  14852  mat1f1o  22416  txdis  23570  pt1hmeo  23744  utop2nei  24189  utop3cls  24190  imasdsf1olem  24312  ex-xp  30417  elrgspnlem4  33240  poimirlem3  37647  poimirlem4  37648  poimirlem9  37653  poimirlem28  37672  grposnOLD  37906  dib0  41183  imaf1hom  49067  setc1ocofval  49379  diag1f1olem  49418
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