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Definition df-lng 27667
Description: Define the line index extractor for geometries. (Contributed by Thierry Arnoux, 27-Mar-2019.) Use its index-independent form lngid 27671 instead. (New usage is discouraged.)
Assertion
Ref Expression
df-lng LineG = Slot 17

Detailed syntax breakdown of Definition df-lng
StepHypRef Expression
1 clng 27665 . 2 class LineG
2 c1 11107 . . . 4 class 1
3 c7 12268 . . . 4 class 7
42, 3cdc 12673 . . 3 class 17
54cslot 17110 . 2 class Slot 17
61, 5wceq 1542 1 wff LineG = Slot 17
Colors of variables: wff setvar class
This definition is referenced by:  lngndx  27669  lngid  27671
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