拡かく大だい実じっ数すう

noun

extended real number

A mathematical term referring to the real numbers augmented with positive and negative infinity. Used in analysis and measure theory.

• 拡かく大だい実じっ数すうでは、正せいの無む限げん大だいと負ふの無む限げん大だいが含ふくまれる。

  The extended real numbers include positive infinity and negative infinity.