What does the symbol $\sqsubset$ mean? Is it the same as $\subset$?
112523
Does $\sqsubset$ have any special meaning?
7785
Cardinality of sum-set
97547
Is it possible to get a diagonal subset symbol?
53513
Why is it that in $\mathbb{F}_q \setminus 0$, there are exactly as many squares as non-squares?
26572
Does the Symmetric difference operator define a group on the powerset of a set?
58594
Is the empty set a subset of itself?
42913
Equivalence of the definition of the Subbasis of a Topology
47562
Confusion in symbol of subset.
60665
Meaning of $\mathbb{Z}\left[\sqrt{3}\right]$?
65768
What is the cardinality of the set of the empty set?
144360
For any sets $A$ and $B$, show that $(B\smallsetminus A)\cup A=B \iff A\subseteq B$.
151719
Connected set in $\mathbb{S}^1$
156006
Cardinality of set containing all infinite subsets of $\mathbb{Q}$
71653
Why is the Cartesian product of a set $A$ and empty set an empty set?
153551
Is the null set a subset of every set?
132541
Showing ${1\over n}\sum|S_i|=O(\sqrt n)$ for $S_i\subset [n]$, $|S_i\cap S_i|\le 1$ for $i\ne j$
9066
Whats the difference between Antisymmetric and reflexive? (Set Theory/Discrete math)