Carlo Beenakker has developed a TextExpander snippet group with Latex math and Greek symbols which he uses when discussing math and physics in email or chat. Some examples from this group:
|\alpha||α||Greek letter alpha|
|\sqrt||√||Square root symbol|
You can download the Latex math and Greek symbols group here:
Choose Add Group from File from the + menu to import the new group.
Thanks for sharing your group with us, Carlo!