Topology Quiz 1

Arbitrary union of open sets is ------------

(a)  

Arbitrary intersection of open sets --------

(a)  

If X is any set then -------is a basis for the discrete topology of X

(a)  

each basis element is ------- of the topology

(a)  

each element of a topology is ------

(a)  

If B consists of collection of all open intervals in R then B generates ---------- topology

(a)