Is the notion of set different from a notion of collection of objects?
3482
What are the differences between class, set, family, and collection?
82315
is an empty set an element of {empty set}
114968
Partition of a set, definition not clear
18527
Confusion on Derived Sets and the $n$-the Derived Set
22498
In set theory, how are real numbers represented as sets?
20004
Meta Theory when studying Set Theory
47697
Russell's paradox: a set cannot contain its own powerset
9330
Meaning behind Filter in Set Theory
74860
Why is the empty set a subset of every set?
97373
Is whether a set is closed or not a local property?
141299
Alternative set theories
14512
Why cannot a set be its own element?
38296
Java collections -- polymorphic access to elements
32296
Calling a space a set - abuse of terminology?
10472
Is every set a subset?
24050
Characterization of the Closure of a Set
142045
What's the definition of limit of sets(esp. ordinals) in set theory?