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SquareSubset

\[SquareSubset]
  • Infix set relation operator.
  • x


    y is by default interpreted as SquareSubset[x,y].
  • Used in computer science to indicate that x is a substring occurring at the beginning of y.
  • See The Mathematica Book: Section 3.10.4.
  • See also: \[NotSquareSubset], \[SquareSuperset].