New Kind of Paper

Re:New Kind of Paper by ajuc on Wednesday June 23, 2021 @03:47AM (#27601904)

Depends on the country. In Poland it's usually nothing for multiplication:

    (x+3)(10-y)

then dot, then asterisk. Nobody writes "x" for scalar multiplication cause it's easy to mistake it for the variable x. What do you mean by 2xy? 2 * y or 2 * x * y?

Another cultural difference is how 7 and 1 is written - in USA you write 7 with 2 strokes and 1 with 1 stroke. In my country 7 is always crossed (always has 3 strokes) and 1 has 2 strokes.

And variable z is usually crossed in equations to distinguish it from 2 (but that varies regionally).

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Re:New Kind of Paper by fratajcz on Wednesday June 23, 2021 @04:03AM (#27602017)

In this case, most people will write the variable x with curved ends (𝑥) and the operator with straight ends.

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Re:New Kind of Paper by leephillips on Wednesday June 23, 2021 @12:29PM (#27606388)

That was how I learned to notate multiplication in high school or earlier. It’s how it’s done in all the mathematical literature or textbooks I’ve ever seen. And people only started using * when they started programming computers.

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Re:New Kind of Paper by ajuc on Wednesday June 23, 2021 @02:47PM (#27608430)

You might be surprised then that we don't even use . as a decimal point :)

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