Definition df-gdlop7 35785

Description: Define the seventh Gödel operation. This function takes two arguments and returns the intersection of the first argument with the second converse of the second argument (see df-in 3905 and df-cnv2 35777). Based on the seventh case of Definition 14.2 of [TakeutiZaring] p. 144. (Contributed by BTernaryTau, 2-Sep-2026.)

Assertion

Ref	Expression
df-gdlop7	⊢ ℱ7 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑥 ∩ (Cnv2‘𝑦)))

Distinct variable group:   𝑥,𝑦

Detailed syntax breakdown of Definition df-gdlop7

Step	Hyp	Ref	Expression
1		cgdlop7 35774	. 2 class ℱ7
2		vx	. . 3 setvar 𝑥
3		vy	. . 3 setvar 𝑦
4		cvv 3450	. . 3 class V
5	2	cv 1569	. . . 4 class 𝑥
6	3	cv 1569	. . . . 5 class 𝑦
7		ccnv2 35766	. . . . 5 class Cnv2
8	6, 7	cfv 6527	. . . 4 class (Cnv2‘𝑦)
9	5, 8	cin 3897	. . 3 class (𝑥 ∩ (Cnv2‘𝑦))
10	2, 3, 4, 4, 9	cmpo 7410	. 2 class (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑥 ∩ (Cnv2‘𝑦)))
11	1, 10	wceq 1570	1 wff ℱ7 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑥 ∩ (Cnv2‘𝑦)))

This definition is used by: (None)