Definition:Tychonoff Plank

Definition
Let $\omega$ be the first transfinite ordinal.

Let $\Omega$ be the first uncountable ordinal.

Let $\closedint 0 \omega$ and $\closedint 0 \Omega$ be closed ordinal spaces which have both been given the interval topology.

The Tychonoff plank is the topological space defined as:
 * $T = \closedint 0 \omega \times \closedint 0 \Omega$

Also see

 * Tychonoff Plank is Topology