Theorem 3no

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

	Ref	Expression
Assertion	3no	⊢ ( 3o × { 2o } ) ∈ No

Proof

Step	Hyp	Ref	Expression
1		3on	⊢ 3o ∈ On
2	1	onnoi	⊢ ( 3o × { 2o } ) ∈ No