Andreas Prilop <nh******@rrzn-user.uni-hannover.de> wrote:

Second, don't attempt to make a horizontal bar but simply write

V(a²+b²)

where I used "V" to represent the square root sign.

I'm not so sure about it - in some cases, a horizontal bar might improve

the appearance, as I discuss at

http://www.cs.tut.fi/~jkorpela/math/#uol
Note that using text-decoration: overline puts it a little lower than

using a top border. There's still the minor problem that the square root

sign does not connect with the overline. We can make the gap smaller, at

the risk of causing higher actual line height if this appears inside

running text:

<big>√</big><span style="text-decoration:overline">103</span>

On the other hand, there's the low-tech reliable approach of using

sqrt(103), though it's possible that some people won't recognize it but

would understand the root sign - but this can usually be handled by

giving an explanation - perhaps on the fly, by using

<a href="expl.html#sqrt" title="square root of">sqrt</a>(103)

But in a relatively mathematical text, I would try the root sign method,

with overline, though probably using parentheses as well if the radicand

contains any binary operators.

--

Yucca,

http://www.cs.tut.fi/~jkorpela/
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