Measurable map
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Definition
Let [ilmath](X,\mathcal{A})[/ilmath] and [ilmath](X',\mathcal{A}')[/ilmath] be measurable spaces
Then a map [math]T:X\rightarrow X'[/math] is called [math]\mathcal{A}/\mathcal{A}'[/math]-measurable if [math]T^{-1}(A')\in\mathcal{A},\ \forall A'\in\mathcal{A}'[/math]
