Index of terms
From Maths
Term  Context  Meaning 

Extended real value 

Refers to the set [math]\mathbb{R}\cup\{+\infty,\infty\}[/math] where it is understood that [math]\forall x\in\mathbb{R}[\infty < x < \infty][/math] There are some properties defined that relate various elements of [math]\mathbb{R}[/math] to the infinite members 