How to call a partition of $X$ which consists of all singleton subsets of $X$?
92906
A formal name for "smallest" and "largest" partition
158671
Cardinality of a set that consists of all existing cardinalities
41305
Nondeterministic functions in sql partitioning functions
73154
Compact subset in colimit of spaces
100482
What's the formula for partitions where each group has a different size?
136108
Arbitrary intersection of closed, connected subsets of a compact space connected?
21754
Partition a set into subsets of size $k$
90737
Partitioning in JavaScript
114370
I want to figure out how many Topologies are in the set X
66464
Faithful group actions for singleton group or for empty set
58594
Is the empty set a subset of itself?
102510
Count number of subsets of 3 elements either disjoint or whose intersection is a singleton
97951
Is the void set (∅) a proper subset of every set?
88281
Mixing and Distributing Qualifiers ($\forall x$, $\exists x$)
124325
Element of, subset of and empty sets
146204
Subsets sharing at most $i$ elements
83830
Sigma algebra generated by the set of all singletons