Re: Another repeating decimal notation

 One thing that might be worth considering…

Just like the decimal separator can be either a comma or a dot, but is
always represented as a “.” in a <mn> element, perhaps the repeating digits
could also be represented by a single convention when inside a <mn> element,
but displayed according to the user’s preference.

If you were to pick one convention, the parentheses have the convenience of
being simple to represent, using only ASCII characters.

So,<mn>0.(1)</mn> could be displayed as "0,(1)” in Poland and “1.1" in the
US.





On May 23, 2024 at 5:42:05 PM, Neil Soiffer <soiffer@alum.mit.edu> wrote:

> @Arno: thanks for the link.
>
> In the Spanish and Portuguese braille spec, I had seen the arc notation
> and was surprised by it. I hadn't seen parens, but apparently they are
> common outside the English speaking world.
>
> Some notations for repeating are mentioned in the full spec:  Section
> 3.6.8.4 Repeating Decimal <https://w3c.github.io/mathml/#presm_repeatdec>..
> Just as the "..." doesn't fit into what is described there, I don't think
> the parens do. However, maybe the arc notation does, although we don't have
> a way to represent an arc that spans several digits (the overline works
> because "msline" can span digits).
>
>     Neil
>
>
> On Thu, May 23, 2024 at 5:23 PM Arno Gourdol <arno@arno.org> wrote:
>
>> Yes, that’s a pretty common notation. It’s used in France, Austria,
>> Denmark, Finland, the Netherlands, Norway, Russia, Ukraine, Vietnam and
>> Israel. Some of those countries use a decimal comma others use a decimal
>> point.
>>
>> See https://en.wikipedia.org/wiki/Repeating_decimal
>>
>> On May 23, 2024 at 5:08:23 PM, Neil Soiffer <soiffer@alum.mit.edu> wrote:
>>
>>> Somewhere else, someone said that in Poland, the notation for a
>>> repeating decimal is
>>>   a,(b)
>>>
>>> Does anyone know of other languages that use this notation for repeating
>>> decimals?
>>>
>>>     Neil
>>>
>>>