# \bfbbXi

The Ξ symbol (Greek capital letter xi, U+039E), written as \bfbbXi in LaTeX math mode.

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

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Blackboard bold (bboldx)](https://texform.dev/latex/topics/blackboard-bold) |
| Packages | bboldx |
| Allowed mode | math |
| Glyph | Ξ |
| Unicode | U+039E GREEK CAPITAL LETTER XI |
| Delimiter | No |

## Syntax

```latex
\bfbbXi
```

Takes no arguments.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+039E (GREEK CAPITAL LETTER XI).