Index of terms

Term	Context	Meaning
Extended real value	Measure Theory	Refers to the set $$\mathbb{R}\cup\{+\infty,-\infty\}$$ where it is understood that $$\forall x\in\mathbb{R}[-\infty < x < \infty]$$ There are some properties defined that relate various elements of $$\mathbb{R}$$ to the infinite members