## Set theory model building

Hi,

I was wondering if anyone had any ideas how to approach this model building exercise. I've got to use set theory to design a discussion group, i'm given two initial sets (Persons and Strings), from this I have to make the following sets:

Members - set of members, each member is a person.
(This i believe is a simple set in which member is a subset of Persons)

Topics - set of topics debated, each topic is a string.
(I believe topic is a subset of string)

Statements - set of statements made by members, eash statement is a string.
(Again i think this is a simple statement is subset of string)

Views - set of views of members on topics, each view consists of of a statement and the name of the member who made the statement.
(This I am unsure of notation on, as view consists of a member and a statement)

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Assuming the sets of members and statements are already defined, then views $$\subseteq$$members x statements where x is the cartesian product operator.