[OS X TeX] Latex symbol for "define equal"

[Gary L. Gray]

> On Aug 18, 2018, at 7:21 AM, Themis Matsoukas <tmatsoukas at icloud.com> wrote:
> 
> What is the accepted symbol in math for “equal by definition” and how to get in latex? I have been using \equiv but I have seen “:=“, equal sign with a triangle on top, or “def” on top of =. 

I have seen it done in many ways, but I have always used \equiv. I would simply state that when that symbol is used, it means “equal to by definition”.

Gary
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