Conditions for a Dynkin system to be a sigma-algebra

This page is intended to list different conditions for a Dynkin system (also called a [ilmath]d[/ilmath]-system) to be a [ilmath]\sigma[/ilmath]-algebra

Conditions

• A Dynkin system, [ilmath]\mathcal{D} [/ilmath] is a [ilmath]\sigma[/ilmath]-algebra if and only if it is [ilmath]\cap[/ilmath]-closed (which is to say it is also a [ilmath]p[/ilmath]-system)

See also

• Conditions for a generated Dynkin system to be a [ilmath]\sigma[/ilmath]-algebra