Horseshoe (symbol)

Horseshoe[1] (⊃, \supset in TeX) is a symbol used to represent:

It was used by Russell and Whitehead in Principia Mathematica. In Unicode the symbol is encoded U+2283 ⊃ superset of (HTML ⊃ · ⊃).

See also

References

  1. ↑ Whitehead, A.N., and Russell, Bertrand, Principia Mathematica
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