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Is it good style to write $0, $0, $0 as $0?

The following does not seem so clear:

$0

as it may be interpreted as: $0 and $ j<1$ or $0, $0

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    Don't be afraid of words in mathematical writing. Example: "$i$, $j$, and $k$ lie in the open interval $(0, 1)$."2014-11-19

3 Answers 3

1

It depends on context.

Let $0\le a$, $b\le 0$ and $c = a - b$. Then $0\le c$.

You can use an interval instead: $i,j,k\in (0,1)$.

4

It is okay. The comma indicates that there is no necessary relation between $i,j$ and $k$.

4

I would definitely interpret $0 < i,j < 1$ as $0 < i < 1 \text{ and } 0 < j < 1. \quad (*)$ I would not interpret it as $0 < i \text{ and } j < 1. \quad (**)$ It is conventional, when writing a single inequality between a variable and a constant, to put the variable on the left, so if I meant (**), I would write $i > 0,\, j < 1.$

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    @t.b.: Fixed. I thought something didn't seem quite right.2012-06-25