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\[SquareSuperset]\[SquareUnion]

SquareSupersetEqual

SquareSupersetEqual \[SquareSupersetEqual]

FilledSmallSquare Infix set relation operator.

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

FilledSmallSquare See The Mathematica Book: Section 3.10.4.

FilledSmallSquare See also: \[NotSquareSupersetEqual] .

\[SquareSuperset]\[SquareUnion]