"There is no set containing everything"?
13374
Why is "the set of all sets" a paradox, in Layman's terms?
82315
is an empty set an element of {empty set}
108516
"Not empty" set in one word?
20140
Example of set which contains itself
68244
Is ∅ equivalent to {∅}?
97373
Is whether a set is closed or not a local property?
130771
Sets and the principle of inclusion and exclusion
26008
Why there is a unique empty set?
50258
How can a set contain itself?
124325
Element of, subset of and empty sets
71653
Why is the Cartesian product of a set $A$ and empty set an empty set?
65549
What is the cartesian product of an empty set of sets?
156233
Why does the set of all singleton sets not exist?
27107
intersection of the empty set and vacuous truth
33064
Powerset of set with empty sets
62542
Why is the empty set considered an interval?
14512
Why cannot a set be its own element?