How do you do the "therefore" (∴) symbol on a Mac or in Textmate?

Question

Is there a way to write the ∴ therefore symbol with keyboard shortcuts in Textmate or just on a mac?

Answer 1

From System Preferences, turn on the "Show Keyboard & Character Viewer in menu bar" setting.

Then, the "Character Viewer" menu will pop up a tool that will let you search for any unicode character (by name) and insert it ∴ you're all set.