# Definition:Tychonoff Corkscrew/Deleted

## Definition

Let $T = \struct {S, \tau}$ denote the Tychonoff corkscrew.

Let $a^-$ denote the distinguished point of $S$ considered as being the infinity point at the bottom of $T$.

The deleted Tychonoff corkscrew is the topological subspace defined as:

$T_\infty = \struct {S \setminus \set {a^-}, \tau}$

## Also see

• Results about the deleted Tychonoff corkscrew can be found here.

## Source of Name

This entry was named for Andrey Nikolayevich Tychonoff.