Set of subsets notation.
39226
What's the meaning of a set to the power of another set?
124325
Element of, subset of and empty sets
76405
Let n be an even integer. How many different ways can I choose subsets of the set {1,2...,n}
120610
Find a subset of $S = \{(1, 0, i), (i, 2, -3), (2-i, 1+i, i)\}$ that forms a basis for $\textsf V = \operatorname{span}(S)$
114968
Partition of a set, definition not clear
95373
Additive set function on a semiring of sets
113566
\subseteq + \circ as a single symbol ("open subset")
120376
Schema of separation and set of all sets
130771
Sets and the principle of inclusion and exclusion
97547
Is it possible to get a diagonal subset symbol?
72440
Partition a set into $k$ non-empty subsets
148025
Is there an operator for 'contained in set or subset or subset of subset' and so on?
57822
Number of ways to choose two disjoint subsets of a set
5230
Why can a 1 element set be a member of another set but not a subset of it?
20973
How can I find all the subsets of a set, with exactly n elements?
24685
Expressing a Countable Union of Sets as the Countable Union of Disjoint Sets (e.g. Eliminating Duplicate Intersections)
858
Is $\{\emptyset\}$ a subset of $\{\{\emptyset\}\}$?