Definition df-itv 28902

Description: Define the Interval (segment) index extractor for Tarski geometries. The interval is closed (tgbtwntriv1 28959 and tgbtwntriv2 28955). Also known as the betweenness relation. (Contributed by Thierry Arnoux, 24-Aug-2017.) Use its index-independent form itvid 28906 instead. (New usage is discouraged.)

Assertion

Ref	Expression
df-itv	⊢ Itv = Slot ;16

Detailed syntax breakdown of Definition df-itv

Step	Hyp	Ref	Expression
1		citv 28900	. 2 class Itv
2		c1 11204	. . . 4 class 1
3		c6 12404	. . . 4 class 6
4	2, 3	cdc 12817	. . 3 class ;16
5	4	cslot 17364	. 2 class Slot ;16
6	1, 5	wceq 1569	1 wff Itv = Slot ;16

This definition is used by:  itvndx  28904  itvid  28906