But do you use j or \mathrm{j}?

I personally dislike the use of mathrm or constants. I find it less
pleasing to the eye.

Also, I should note that SymPy currently doesn't use mathrm for e or \pi.

Aaron Meurer

On Jan 17, 2013, at 12:34 PM, Tim Lahey <[email protected]> wrote:

> Hi,
>
> According to Kopka and Daly (Section 7.4.10 in the 4th edition), one is to 
> use \mathrm{i} for the special number i to emphasize that it's not a 
> variable. The same goes for e, pi, and the differential operator d.
>
> These are the recognized standards for typesetting mathematics (apparently).
>
> I don't actually use i, I actually use j instead which is the typical 
> engineering convention.
>
> Cheers,
>
> Tim.
>
> On 2013-01-17, at 2:24 PM, Aaron Meurer <[email protected]> wrote:
>
>> I don't see why i should be in bf, and I also don't see why we should
>> use imath. From what I can tell, imath is an i without the dot, which
>> is useful if you want to put a hat or a vector symbol on it, but
>> doesn't seem right for imaginary i.
>>
>> Personally, I always just typeset it as just "i". I couldn't find any
>> good references for this, though. What do things like Maple or
>> Mathematica latex functions give?
>>
>> Aaron Meurer
>>
>
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