We consider the set RK. That is the all open intervals together with intervals of the form(a,b)∖K where K=n1:n∈Z+ This space is connected as there are no open sets B and C such that RK⊂B∪C,RK∩B=∅,RK∩C=,RK∩B∩C=∅ but notpath-connected as there is no continous path lying in the set joining 2 arbitrary points in the set
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