\blacktriangleleftThe symbol \blacktriangleleft is used to represent a left-pointing black triangle. It is often used in mathematical contexts to denote operations or relations, such as a specific type of product or a relation in order theory.
Represents a relation or operation between A and B using the left-pointing black triangle.
A \blacktriangleleft BSequence of operations or relations involving multiple elements.
P \blacktriangleleft Q \blacktriangleleft RDefines a specific operation or result using the left-pointing black triangle.
x \blacktriangleleft y = z