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<p style="margin-top:0;margin-bottom:0">Yes, the sign = usually denotes an equivalence relation between two sets of interest. So the equality sign is a matter of notation, denoting "equality" (in the sense of an <span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">equivalence
relation).</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Från:</b> MacOSX-TeX <macosx-tex-bounces@email.esm.psu.edu> för "Néstor E. Aguilera" <nestoreaguilera@gmail.com><br>
<b>Skickat:</b> den 21 augusti 2018 14:43<br>
<b>Till:</b> Ralph Martin<br>
<b>Kopia:</b> TeX on Mac OS X Mailing List<br>
<b>Ämne:</b> Re: [OS X TeX] Latex symbol for "define equal"</font>
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<div class="PlainText">Hi Ralph:<br>
<br>
> On 21 Aug 2018, at 09:30, Ralph Martin <ralphrmartin@gmail.com> wrote:<br>
> <br>
>> [...]<br>
> <br>
> Definitions give *names* for concepts: <br>
> - a "matrix" is a two-dimensional table ...<br>
> - an "invertible matrix" is a matrix which ...<br>
> <br>
> Notation gives *symbols* for concepts (or quantities):<br>
> - π is used to denote the ratio of the circumference of any circle to its diameter<br>
> - t is used to denote time<br>
> - boldface letters are used to denote vectors<br>
> <br>
> I always have trouble getting computer science students not to use multi-letter variable *names* in maths, when they should be using *symbols* for variables.<br>
<br>
So, would you say that the equality sign (or some replacement of it) in a "definition" is actually describing a "notation"?<br>
<br>
Nestor<br>
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