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\[NotSquareSubset]\[NotSquareSuperset]

NotSquareSubsetEqual

NotSquareSubsetEqual \[NotSquareSubsetEqual]

FilledSmallSquare Infix set relation operator.

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

FilledSmallSquare See The Mathematica Book: Section 3.10.4.

FilledSmallSquare See also: \[NotSquareSubset] , \[SquareSubsetEqual] .

\[NotSquareSubset]\[NotSquareSuperset]