Personally I’ve always preferred a minus sign closer, like the latter. While the subtraction operator looks better as the former. But I think this is just a calculator-ism that has infected my math syntax.
But especially for matrix inversion, the super wide subtraction symbol just looks awful to me. A little calculator style minus symbol is also nice because it’ll clear the matrix more easily…
The issue of non-ASCII-constrained environments is that it's still not easily accessible on most keyboards.
I do know and use the compose key but it's not the same as having a standard key for it. Trying on a mobile device, long pressing the dash key there suggests 2 dashes (not sure if the second choice is en-dash or em-dash), which is some but that's not the 4 types discussed here.
Good/bad news: It should be U+2212 MINUS SIGN like this: −1, which is none of the others. It looks better than hyphen: -1, doesn't it?
Matplotlib example: https://matplotlib.org/stable/gallery/text_labels_and_annota...
Personally I’ve always preferred a minus sign closer, like the latter. While the subtraction operator looks better as the former. But I think this is just a calculator-ism that has infected my math syntax.
But especially for matrix inversion, the super wide subtraction symbol just looks awful to me. A little calculator style minus symbol is also nice because it’ll clear the matrix more easily…
Hyphen. You'll also hear it called "hyphen-minus"
"Hyphen‐minus" is an ASCII abomination, and should only be used in ASCII‐constrained environments. Hyphen is hyphen and minus is minus:
‐ 002010;HYPHEN;Pd;0;ON;;;;;N;;;;;
− 002212;MINUS SIGN;Sm;0;ES;;;;;N;;;;;
The issue of non-ASCII-constrained environments is that it's still not easily accessible on most keyboards.
I do know and use the compose key but it's not the same as having a standard key for it. Trying on a mobile device, long pressing the dash key there suggests 2 dashes (not sure if the second choice is en-dash or em-dash), which is some but that's not the 4 types discussed here.
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I was wondering what's better. The document is clearer if we use unicode.
But maybe for humans it's easier if we have a limited character set and use context instead. Like this.
In plain text, - is a hyphen:
In math context - is a minus sign
Where it will be ensured to be rendered as appropriate
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