Definition df-hvsub 27212

Description: Define vector subtraction. See hvsubvali 27261 for its value and hvsubcli 27262 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 27166	. 2 class −ℎ
2		vx	. . 3 setvar 𝑥
3		vy	. . 3 setvar 𝑦
4		chil 27160	. . 3 class ℋ
5	2	cv 1474	. . . 4 class 𝑥
6		c1 9816	. . . . . 6 class 1
7	6	cneg 10146	. . . . 5 class -1
8	3	cv 1474	. . . . 5 class 𝑦
9		csm 27162	. . . . 5 class ·ℎ
10	7, 8, 9	co 6549	. . . 4 class (-1 ·ℎ 𝑦)
11		cva 27161	. . . 4 class +ℎ
12	5, 10, 11	co 6549	. . 3 class (𝑥 +ℎ (-1 ·ℎ 𝑦))
13	2, 3, 4, 4, 12	cmpt2 6551	. 2 class (𝑥 ∈ ℋ, 𝑦 ∈ ℋ ↦ (𝑥 +ℎ (-1 ·ℎ 𝑦)))
14	1, 13	wceq 1475	1 wff −ℎ = (𝑥 ∈ ℋ, 𝑦 ∈ ℋ ↦ (𝑥 +ℎ (-1 ·ℎ 𝑦)))

This definition is referenced by:  h2hvs  27218  hvsubf  27256  hvsubval  27257