[OS X TeX] Latex symbol for "define equal"
Art Werschulz
agw at comcast.net
Sun Aug 19 04:01:41 CEST 2018
Hi.
> 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'm used to seeing := as the notation for "is defined to be". You sometimes find =: for "defines", when it's more natural to have the thing being defined at the end, rather than at the beginning, of a math passage.
The centercolon and mathtools LaTeX packages are used to fix symmetry issues with := .
BTW, the last time I used \equiv for defining something (something like $E_{d,\gamma}f\equiv f$, a referee swatted it down. :=)
Art Werschulz
agw at comcast.net
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