Proof exercise that the cardinal number of a set in $\mathbb R^2$ is $\frak c$ [Edited]
70164
Proof exercise that the cardinal number of a set in $\mathbb R^2$ is $\frak c$
85099
How many subsets of $\mathbb{N}$ have the same cardinality as $\mathbb{N}$?
101669
Cardinality of the Set of all finite subset of $\mathbb{R}$
59459
Binary sequences and ${2}^{\mathbb{N}}$ have the same cardinality
9651
Cardinality of cartesian product of an infinite set with N
146867
Combinatorial Proof Of A Number Theory Theorem--Confusion
96845
Question: Compare the cardinality between the sets $\Bbb R$ and $\Bbb N^{\Bbb N}$
74281
Proof there is no largest cardinal number
48523
Let $A$ be any uncountable set, and let $B$ be a countable subset of $A$. Prove that the cardinality of $A = A - B $
16553
Cardinality of the set of all total orders on $\Bbb{N}$
71967
cardinality of the set of $ \varphi: \mathbb N \to \mathbb N$ such that $\varphi$ is an increasing sequence
138283
$|(a,b)| = |\Bbb R|$ ? Cardinality of any open interval
13273
Cardinality of the set of all real functions of real variable
109764
Find the cardinality of the quotient of $\mathbb R$ in respect to R
88904
Help with a proof. Countable sets.
89167
Cardinality of equivalence relations in $\mathbb{N}$
12003
Cardinality of set of real continuous functions