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  • Infix operator.
  • x

    y is by default interpreted as SquareUnion[x,y].
  • Used in mathematics to denote various forms of generalized union, typically of disjoint subspaces.
  • See The Mathematica Book: Section 3.10.4.
  • See also: \[SquareIntersection], \[Union], \[UnionPlus], \[Vee], \[Coproduct].