Hi, On سهشنبه, 2005-10-18 at 11:42 +0100, Max Froumentin wrote: > Thanks for the responses. Let me comment on each here: > > > It is a normal form of an equation in Iran. In Afghanistan, also a > > Persian speaking country, mathematical notations are expressed the > > same way as in English. > > Even in primary school? When kids learn to write "1+2+3" do they start > straight away to write mathematics left to right in the middle of > right to left text?

That's right. Even in primary school. > Among the common differences you see in primary > school mathematics are the long division notation. e.g. In English > it's written as shown in > <http://www.mathsisfun.com/long_division2.html>. In french it's: > > 14523 | 34 > 92 |------ > 243 | 427 > 5 | > We do that this way: 14523 | 34 136 |----- ------| 427 92 | 68 | ------| 243 | 238 | ------| 5| > Another example is the division sign. Sometimes you see: > ½, or 1/2, or 1:2, or 1÷2, or 1 > - > 2 > ÷ is used as division sign. > etc. These are differences between different variant of the "Western" > notation, > and they require different rendering rules for MathML. That's what we're > trying > to figure out as much as possible all the variants. > > > I don't know how is arabic mathematics but the picture is a normal > > form of an equation in Persian > > I don't know the difference with Arabic either. But what I notice > relative to English is that the limit sign is stretching. And I > wonder if other common operators are the same. How about sine > and cosine? Are they always written 'sin' and 'cos'. Are there local > variations? (e.g. in French, 'tan' is written 'tg') > I've seen both tan and tg in mathematic books. But I don't know which one is official. > > I think the "stretched" word "limit" is just a stylish way of writing > > which compensates more space for the "x --> pi/10". However, "pi/10" > > is a fraction, if I am not wrong, and should be written like the other > > fraction "1/4". > > So the stretched 'limit' wouldn't always be stretched? > Not always but usually. Not stretched one (حد) isn't usually long enough to write "x --> pi/10" or other thing under it. Elnaz > Max. > > > _______________________________________________ > PersianComputing mailing list > PersianComputing@lists.sharif.edu > http://lists.sharif.edu/mailman/listinfo/persiancomputing _______________________________________________ PersianComputing mailing list PersianComputing@lists.sharif.edu http://lists.sharif.edu/mailman/listinfo/persiancomputing