Linked from
The 10 pages that link to Infinite set, each with the reason it gives.
Power setCompared with: Its power set cannot be put in bijection with the original set.
Finite setCompared with: It is the direct opposite of a finite set.
Cardinal numberRelated: Infinite sets make cardinality differ from ordinary finite counting.
Uncountable setNarrower topic: Uncountable sets are a particular kind of infinite set.
Ramsey's theoremRelated: The theorem guarantees an infinite homogeneous subset inside this setting.