Sets, empty sets and set cardinality (Discrete Math)
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 $\geq 1\ldots$
79568
Cardinality of the set $D$
27107
intersection of the empty set and vacuous truth
142267
If two sets have the same cardinality, then so do their power sets. Converse can't be answered?
73850
Cardinality of set of functions
7785
Cardinality of sum-set
125683
Power set of a finite set is finite proof, no cardinality of power set
108922
Cardinality and infinite sets: naturals, integers, rationals, bijections
109219
How do the sets $\emptyset\times B,\ A\ \times \emptyset, \ \emptyset \times \emptyset $ look like?
110677
How is an empty set truly "empty"?
33064
Powerset of set with empty sets
3663
Finding counterexamples in elementary set theory.
79974
The cardinality of Lebesgue sets
130771
Sets and the principle of inclusion and exclusion
46317
What is an Empty set?
44214
The number of subsets of a set of cardinality $n$
121366
Intervals and cardinality