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How t write the big Xi notation in MathJax?
- How to write the big Xi notation in MathJax?
#1: Initial revision
How t write the big Xi notation in MathJax?
How to write the big Xi symbol in MathJax?  $\Xi$, not as I wanted. In [the video](https://youtu.be/BFAAaOo2BMo?list=PL8yHsr3EFj537_iYA5QrvwhvMlpkJ1yGN&t=542), he said that it is the awful notation in Mathematics and called it Xi. After searching about the notation in internet I got nothing.