Definition df-hvsub 30898

Description: Define vector subtraction. See hvsubvali 30947 for its value and hvsubcli 30948 for its closure. (Contributed by NM, 6-Jun-2008.) (New usage is discouraged.)

Assertion

Ref	Expression
df-hvsub	⊢ −ℎ = (𝑥 ∈ ℋ, 𝑦 ∈ ℋ ↦ (𝑥 +ℎ (-1 ·ℎ 𝑦)))

Distinct variable group:   𝑥,𝑦

Detailed syntax breakdown of Definition df-hvsub

Step	Hyp	Ref	Expression
1		cmv 30852	. 2 class −ℎ
2		vx	. . 3 setvar 𝑥
3		vy	. . 3 setvar 𝑦
4		chba 30846	. . 3 class ℋ
5	2	cv 1539	. . . 4 class 𝑥
6		c1 11128	. . . . . 6 class 1
7	6	cneg 11465	. . . . 5 class -1
8	3	cv 1539	. . . . 5 class 𝑦
9		csm 30848	. . . . 5 class ·ℎ
10	7, 8, 9	co 7403	. . . 4 class (-1 ·ℎ 𝑦)
11		cva 30847	. . . 4 class +ℎ
12	5, 10, 11	co 7403	. . 3 class (𝑥 +ℎ (-1 ·ℎ 𝑦))
13	2, 3, 4, 4, 12	cmpo 7405	. 2 class (𝑥 ∈ ℋ, 𝑦 ∈ ℋ ↦ (𝑥 +ℎ (-1 ·ℎ 𝑦)))
14	1, 13	wceq 1540	1 wff −ℎ = (𝑥 ∈ ℋ, 𝑦 ∈ ℋ ↦ (𝑥 +ℎ (-1 ·ℎ 𝑦)))

This definition is referenced by:  h2hvs  30904  hvsubf  30942  hvsubval  30943