Theorem 2fno

Description: Ordinal two maps to a surreal number. (Contributed by RP, 21-Sep-2023)

	Ref	Expression
Assertion	2fno	⊢ ( 2o × { 2o } ) ∈ No

Proof

Step	Hyp	Ref	Expression
1		2on	⊢ 2o ∈ On
2	1	onnoxpi	⊢ ( 2o × { 2o } ) ∈ No