Metamath Proof Explorer


Definition df-idp

Description: Define the identity polynomial. (Contributed by Mario Carneiro, 17-Jul-2014)

Ref Expression
Assertion df-idp Xp=I

Detailed syntax breakdown

Step Hyp Ref Expression
0 cidp classXp
1 cid classI
2 cc class
3 1 2 cres classI
4 0 3 wceq wffXp=I