\lhdThe \lhd symbol is used to denote a left-handed operation, often seen in algebra and category theory. It can represent a left action or a specific type of product in certain mathematical contexts.
Denotes that G is a normal subgroup of H in group theory.
G \lhd HRepresents a left action of B on A.
A \lhd BIllustrates a custom operation defined with \lhd.
x \lhd y = z