Theorem 8olt9o

Description: Ordinal 8 is less than ordinal 9. (Contributed by BTernaryTau, 17-Oct-2026)

	Ref	Expression
Assertion	8olt9o	Could not format assertion : No typesetting found for |- 8o e. 9o with typecode |-

Proof

Step	Hyp	Ref	Expression
1		8on	Could not format 8o e. On : No typesetting found for |- 8o e. On with typecode |-
2		sucidg	Could not format ( 8o e. On -> 8o e. suc 8o ) : No typesetting found for |- ( 8o e. On -> 8o e. suc 8o ) with typecode |-
3	1 2	ax-mp	Could not format 8o e. suc 8o : No typesetting found for |- 8o e. suc 8o with typecode |-
4		df-9o	Could not format 9o = suc 8o : No typesetting found for |- 9o = suc 8o with typecode |-
5	3 4	eleqtrri	Could not format 8o e. 9o : No typesetting found for |- 8o e. 9o with typecode |-