Definition df-deg1 25123

Description: Define the degree of a univariate polynomial. (Contributed by Stefan O'Rear, 23-Mar-2015.)

Assertion

Ref	Expression
df-deg1	⊢ deg1 = (𝑟 ∈ V ↦ (1o mDeg 𝑟))

Detailed syntax breakdown of Definition df-deg1

Step	Hyp	Ref	Expression
1		cdg1 25121	. 2 class deg1
2		vr	. . 3 setvar 𝑟
3		cvv 3422	. . 3 class V
4		c1o 8260	. . . 4 class 1o
5	2	cv 1538	. . . 4 class 𝑟
6		cmdg 25120	. . . 4 class mDeg
7	4, 5, 6	co 7255	. . 3 class (1o mDeg 𝑟)
8	2, 3, 7	cmpt 5153	. 2 class (𝑟 ∈ V ↦ (1o mDeg 𝑟))
9	1, 8	wceq 1539	1 wff deg1 = (𝑟 ∈ V ↦ (1o mDeg 𝑟))

This definition is referenced by:  deg1fval  25150