Category:Definitions/Disjoint Events

This category contains definitions related to Disjoint Events.
Related results can be found in Category:Disjoint Events.

Let $A$ and $B$ be events in a probability space.

Then $A$ and $B$ are disjoint if and only if:

$A \cap B = \O$

It follows by definition of probability measure that $A$ and $B$ are disjoint if and only if:

$\map \Pr {A \cap B} = 0$