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\[Square]\[SquareSubset]

SquareIntersection

SquareIntersection \[SquareIntersection]

FilledSmallSquare Infix operator.

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

FilledSmallSquare See The Mathematica Book: Section 1.10.8 and Section 3.10.4.

FilledSmallSquare See also: \[SquareUnion] , \[Intersection] , \[Wedge] .

\[Square]\[SquareSubset]