What happens if the empty set is not a subset of every set?
36721
Is "The empty set is a subset of any set" a convention?
97951
Is the void set (∅) a proper subset of every set?
39020
Why is empty set an open set?
130771
Sets and the principle of inclusion and exclusion
19138
If every object in math can be reduced to sets, how are tuples explained via sets?
155233
$A=\emptyset $ if and only if $B = A \bigtriangleup B$
89712
For every set $A$, the empty set is a subset of $A$. The empty set is a set. Therefore, the empty set has a cardinality $\geq 1\ldots$
33064
Powerset of set with empty sets
124732
Finding a nonempty subset that is not a subgroup
125317
Is this statement "Every element in the empty set is greater than itself." true or its negation is true?
58594
Is the empty set a subset of itself?
47697
Russell's paradox: a set cannot contain its own powerset
46317
What is an Empty set?
27107
intersection of the empty set and vacuous truth
26008
Why there is a unique empty set?
272
Cantor Sets/nonempty/cardinality
1307
Infimum and supremum of the empty set