# \txtbbtau

The τ symbol (Greek small letter tau, U+03C4), written as \txtbbtau in LaTeX text mode.

https://texform.dev/latex/symbols/txtbbtau

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Blackboard bold (bboldx)](https://texform.dev/latex/topics/blackboard-bold) |
| Packages | bboldx |
| Allowed mode | text |
| Glyph | τ |
| Unicode | U+03C4 GREEK SMALL LETTER TAU |
| Delimiter | No |

## Syntax

```latex
\txtbbtau
```

Takes no arguments.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+03C4 (GREEK SMALL LETTER TAU).