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Theorem onno 43395
Description: Every ordinal maps to a surreal number. (Contributed by RP, 21-Sep-2023.)
Assertion
Ref Expression
onno (𝐴 ∈ On → (𝐴 × {2o}) ∈ No )

Proof of Theorem onno
StepHypRef Expression
1 2oex 8422 . . 3 2o ∈ V
21prid2 4723 . 2 2o ∈ {1o, 2o}
3 onnog 43391 . 2 ((𝐴 ∈ On ∧ 2o ∈ {1o, 2o}) → (𝐴 × {2o}) ∈ No )
42, 3mpan2 691 1 (𝐴 ∈ On → (𝐴 × {2o}) ∈ No )
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2109  {csn 4585  {cpr 4587   × cxp 5629  Oncon0 6320  1oc1o 8404  2oc2o 8405   No csur 27527
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 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5246  ax-nul 5256  ax-pow 5315  ax-pr 5382  ax-un 7691
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 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3403  df-v 3446  df-dif 3914  df-un 3916  df-in 3918  df-ss 3928  df-nul 4293  df-if 4485  df-pw 4561  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-br 5103  df-opab 5165  df-mpt 5184  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-suc 6326  df-fun 6501  df-fn 6502  df-f 6503  df-1o 8411  df-2o 8412  df-no 27530
This theorem is referenced by:  onnoi  43396
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