cardinality of the euclidean n-space R
14322
Examples of bijective map from $\mathbb{R}^3\rightarrow \mathbb{R}$
44704
familly of Radially open sets in $\mathbb{R}^2$
46469
$n$ Lines in the Plane
96845
Question: Compare the cardinality between the sets $\Bbb R$ and $\Bbb N^{\Bbb N}$
149382
Prove that $(0,1) \subseteq\mathbb R$ and $(4,10) \subseteq\mathbb R$ have the same cardinality.
75829
Dimension of open subsets of $R^n$
15733
Show that the cardinality of $\mathbb N$ is the same as the cardinality of $\mathbb N \times \mathbb N$
13265
Volume of an n-simplex
41783
Cardinality of the Cartesian Product of Two Equinumerous Infinite Sets
86914
Cardinality of the set of hyperreal numbers
1627
Cartesian product of an arbitrary number of sets
34710
Cardinality of Irrational Numbers
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
79568
Cardinality of the set $D$
110353
Is $\mathbb{R}^n$ a polyhedron?
7785
Cardinality of sum-set