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Definition df-lng 25558
Description: Define the line index extractor for geometries. (Contributed by Thierry Arnoux, 27-Mar-2019.)
Assertion
Ref Expression
df-lng LineG = Slot 17

Detailed syntax breakdown of Definition df-lng
StepHypRef Expression
1 clng 25556 . 2 class LineG
2 c1 10138 . . . 4 class 1
3 c7 11276 . . . 4 class 7
42, 3cdc 11694 . . 3 class 17
54cslot 16062 . 2 class Slot 17
61, 5wceq 1630 1 wff LineG = Slot 17
Colors of variables: wff setvar class
This definition is referenced by:  lngndx  25560  lngid  25562
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