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\[LeftTriangle]\[LeftTriangleEqual]

LeftTriangleBar

LeftTriangleBar \[LeftTriangleBar]

FilledSmallSquare Infix ordering operator.

FilledSmallSquarex y is by default interpreted as LeftTriangleBar[x, y].

FilledSmallSquare See The Mathematica Book: Section 3.10.4.

FilledSmallSquare See also: \[LeftTriangle] , \[LeftTriangleEqual] , \[LeftArrowBar] , \[NotLeftTriangleBar] .

\[LeftTriangle]\[LeftTriangleEqual]