===== Open subsets of ℝⁿ =====
==== Set ====
| @#55CCEE: context     | @#55CCEE: $p\in \mathbb N$ |

| @#FFBB00: definiendum | @#FFBB00: $\mathfrak J_o^p\equiv\{\ ]a,b[\ |\ a,b\in\mathbb R^p\ \land\ a< b\}$ |

==== Discussion ====
We write 

| @#FFBB00: definiendum | @#FFBB00: $\mathfrak J_o\equiv \mathfrak J_o^1$ |
==== Parents ====
=== Context ===
[[Real coordinate space]]