Is it really true that the Cartesian product $\mathbb R^2 \times \mathbb R^3$ is not equal to $\mathbb R^5$?
102383
Associativity of Cartesian Product
66272
Is there a common notion of $\mathbb{R}^n$, for non-integer $n$?
42883
Cross product in $\mathbb R^n$
157840
Is it true that $(R\times S)[G]\cong R[G]\times S[G]$?
55026
$\mathbb{Q}[X,Y]/(Y^2-X^3)$ is not a UFD
149553
Is it always true that $(A_1 \cup A_2) \times (B_1 \cup B_2)=(A_1\times B_1) \cup (A_2 \times B_2)$
80100
Boundary of product manifolds such as $S^2 \times \mathbb R$
15909
Bijection from $\mathbb R$ to $\mathbb {R^N}$
128732
$\mathbb Z_{p^n}$ is not the direct product of any family of its proper subgroups
11259
Prove $R\times S$ is not an integral domain
35305
Why is $\mathbb{R}^2$ not a subset and /or a subspace of $\mathbb{R}^3$?
68838
Why $\sqrt[3]{3}\not\in \mathbb{Q}(\sqrt[3]{2})$?
111032
Proof of Sets involving the Cartesian Product
134081
What is the Cartesian product of $n$ polygons?
22604
Can $R \times R$ be isomorphic to $R$ as rings?
132470
Does $\mathbb R^2$ contain more numbers than $\mathbb R^1$?
14711
set theoretic function, products of sets (product versus Cartesian product)