# Symbols:Greek/Tau

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## Tau

The $19$th letter of the Greek alphabet.

- Minuscule: $\tau$

- Majuscule: $\Tau$

The $\LaTeX$ code for \(\tau\) is `\tau`

.

The $\LaTeX$ code for \(\Tau\) is `\Tau`

.

### Topology

- $\tau$

Frequently used, and conventionally in many texts, to denote a general topology.

It is usually introduced as part of the notation $T = \struct {S, \tau}$ for a general topological space.

## Linguistic Note

The name of the Greek letter $\tau$ (tau) is properly pronounced to rhyme with **cow** not **caw**.