Definition df-itv

Description: Define the Interval (segment) index extractor for Tarski geometries. (Contributed by Thierry Arnoux, 24-Aug-2017) Use its index-independent form itvid instead. (New usage is discouraged.)

	Ref	Expression
Assertion	df-itv	⊢ Itv = Slot ; 1 6

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		citv	⊢ Itv
1		c1	⊢ 1
2		c6	⊢ 6
3	1 2	cdc	⊢ ; 1 6
4	3	cslot	⊢ Slot ; 1 6
5	0 4	wceq	⊢ Itv = Slot ; 1 6