Is This Set a Subset of the Other? Proof Assistance.
52323
Maps - question about $f(A \cup B)=f(A) \cup f(B)$ and $ f(A \cap B)=f(A) \cap f(B)$
134120
Prove statement with a counter-example: For all sets S, T and V, V ∪ (S ∩ T) = (V ∪ S) ∩ T is false
28223
Prove/Disprove that if two sets have the same power set then they are the same set
117658
A set with n elements has 2^n subsets
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
147013
Subset of a finite set is finite
43068
Let A and B be sets. Show that A is a subset of B if and only if for any set C, one has A union C is a subset of B union C.
3072
If the empty set is a subset of every set, why isn't $\{\emptyset,\{a\}\}=\{\{a\}\}$?
150790
Prove two sets have same Cardinality by writing down bijection
136755
Direct proof of empty set being subset of every set
75852
Using Pigeonhole Principle to prove two numbers in a subset of $[2n]$ divide each other
76826
Are there sets $A$ and $B$ such that $A \in B$ and $B \in A$?
1409
Proving that the given set has at most $2^{n-1}$ elements
76405
Let n be an even integer. How many different ways can I choose subsets of the set {1,2...,n}
155063
Is Cl(f(A)) a subset of f(Cl(A))?
32441
How to prove or disprove statements about sets
37183
Show that the set of all $x$ such that $x \in P$ and $x \notin Q$ exists