Exponentiation

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In mathematics, exponentiation is the name for the operation also called raising to a power. In simple cases, it refers to repeated multiplication. It is indicated by a superscript, a small number or expression written above the line:

  • 26, "two to the sixth power," 2& middot;2& middot;2& middot;2& middot;2& middot;2 = 64
  • x4, "x to the fourth power," x·x×x×x
  • yn, "y to the n-th power," y& middot;y& middot;y& middot; ... & middot;y, where y appears n times.