Definition df-mod 11897

Description: Define the modulo (remainder) operation. See modval 11898 for its value. (Contributed by NM, 10-Nov-2008.)

Assertion

Ref	Expression
df-mod	|- mod = ( x e. RR , y e. RR+ |-> ( x - ( y x. ( |_ ` ( x / y ) ) ) ) )

Distinct variable group:   x, y

Detailed syntax breakdown of Definition df-mod

Step	Hyp	Ref	Expression
1		cmo 11896	. 2 class mod
2		vx	. . 3 setvar x
3		vy	. . 3 setvar y
4		cr 9402	. . 3 class RR
5		crp 11139	. . 3 class RR+
6	2	cv 1398	. . . 4 class x
7	3	cv 1398	. . . . 5 class y
8		cdiv 10123	. . . . . . 7 class /
9	6, 7, 8	co 6196	. . . . . 6 class ( x / y )
10		cfl 11826	. . . . . 6 class |_
11	9, 10	cfv 5496	. . . . 5 class ( |_ ` ( x / y ) )
12		cmul 9408	. . . . 5 class x.
13	7, 11, 12	co 6196	. . . 4 class ( y x. ( |_ ` ( x / y ) ) )
14		cmin 9718	. . . 4 class -
15	6, 13, 14	co 6196	. . 3 class ( x - ( y x. ( |_ ` ( x / y ) ) ) )
16	2, 3, 4, 5, 15	cmpt2 6198	. 2 class ( x e. RR , y e. RR+ |-> ( x - ( y x. ( |_ ` ( x / y ) ) ) ) )
17	1, 16	wceq 1399	1 wff mod = ( x e. RR , y e. RR+ |-> ( x - ( y x. ( |_ ` ( x / y ) ) ) ) )

This definition is referenced by:  modval  11898