Metamath Proof Explorer


Definition df-6o

Description: Define the ordinal number 6. (Contributed by BTernaryTau, 2-Sep-2026)

Ref Expression
Assertion df-6o Could not format assertion : No typesetting found for |- 6o = suc 5o with typecode |-

Detailed syntax breakdown

Step Hyp Ref Expression
0 c6o Could not format 6o : No typesetting found for class 6o with typecode class
1 c5o Could not format 5o : No typesetting found for class 5o with typecode class
2 1 csuc Could not format suc 5o : No typesetting found for class suc 5o with typecode class
3 0 2 wceq Could not format 6o = suc 5o : No typesetting found for wff 6o = suc 5o with typecode wff