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Hi Jagath, <br>
<br>
mathvariant 'double-struck' is called <i>blackboard bold</i>. There
are no 'bold double-struck', I believe. <br>
Therefore <i><mstyle mathvariant="bold"></i> is redundant.<br>
<pre class="moz-signature" cols="160">
Best regards,
--
Deimi
</pre>
<div class="moz-cite-prefix">On 08/25/2015 08:24 AM, Jagath AR
wrote:<br>
</div>
<blockquote
cite="mid:CANRay2B1HwArw2us9VNjtXQ+xfVBoMWB7Tonf1=Y_+Qakvp9pg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default" style="color:rgb(51,102,255)">Hi
Georg,</div>
<div class="gmail_default" style="color:rgb(51,102,255)">One of
the easiest way to achieve correct MathML tag for this is to
use below tex4ht cfg on your MWE:</div>
<div class="gmail_default" style="color:rgb(51,102,255)"><br>
</div>
<div class="gmail_default" style="color:rgb(51,102,255)"><font
face="monospace, monospace">%-------------------------------------------------------------------</font></div>
<div class="gmail_default" style="">
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">% htlatex <tex>
<cfg></font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\RequirePackage{amssymb} %
used for \mathbb</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\RequirePackage{bm} %
used for \boldsymbol</font></div>
<div class="gmail_default" style=""><br>
</div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Preamble{xhtml,mathml}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{VERSION}{}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{DOCTYPE}{\HCode{<!DOCTYPE
html>\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{HTML}{\HCode{<html>\Hnewline}}{\HCode{\Hnewline</html>}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{\HCode{<meta
charset="UTF-8" />\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{\HCode{<meta
name="generator" content="TeX4ht</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">(<a moz-do-not-send="true"
href="http://www.cse.ohio-state.edu/%5Cstring%7Egurari/TeX4ht/">http://www.cse.ohio-state.edu/\string~gurari/TeX4ht/</a>)"
/>\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{\HCode{<link</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace"> rel="stylesheet"
type="text/css"</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">
href="\expandafter\csname aa:CssFile\endcsname"
/>\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{\HCode{<script
type="text/javascript"\Hnewline</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">src="<a moz-do-not-send="true"
href="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_SVG">http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_SVG</a>"\Hnewline</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">></script>\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\Configure{@HEAD}{\HCode{<style
type="text/css">\Hnewline</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace"> .MathJax_MathML
{text-indent: 0;}\Hnewline</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace"></style>\Hnewline}}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\begin{document}</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace">\EndPreamble</font></div>
<div class="gmail_default" style=""><font color="#3366ff"
face="monospace, monospace"><br>
</font></div>
<div class="gmail_default" style=""><span
style="color:rgb(51,102,255);font-family:monospace,monospace">\def\mathbbm#1{\boldsymbol{\mathbb{#1}}}</span><br>
</div>
<div class="gmail_default" style="">
<div class="gmail_default" style="color:rgb(51,102,255)"><span
style="font-family:monospace,monospace">\endinput</span><br>
</div>
</div>
<div style="color:rgb(51,102,255)">
<div class="gmail_default" style="color:rgb(34,34,34)">
<div class="gmail_default" style="color:rgb(51,102,255)"><font
face="monospace, monospace">%-------------------------------------------------------------------</font></div>
</div>
</div>
<div style="color:rgb(51,102,255)"><br>
</div>
<div style="color:rgb(51,102,255)">But still I am only able to
see normal blackboard font through browser, while the MathML
is <mstyle
mathvariant="bold"><mi>ℤ</mi></mstyle>.</div>
<div style="color:rgb(51,102,255)"><br>
</div>
<div style="color:rgb(51,102,255)">Regards</div>
<div style="color:rgb(51,102,255)">Jagath</div>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 25 August 2015 at 00:14, Hans Georg
Schaathun <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:georg+tex@schaathun.net" target="_blank">georg+tex@schaathun.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">On Mon, Aug 24, 2015 at 08:32:58PM +0200, Michal
Hoftich wrote:<br>
> could you please provide some sample document? This
depends on your<br>
> input, in particular on used fonts. We can map LaTeX
font symbols to<br>
> unicode values, so it shouldn't be impossible to get
blackboard letters<br>
> without some custom macros.<br>
<br>
</span>Of course here is an example:<br>
\documentclass{scrartcl}<br>
\usepackage{bbm}<br>
\def\Z{\mathbbm{Z}}<br>
\begin{document}<br>
$\Z$<br>
\end{document}<br>
<br>
I am not sure what you have in mind. You are right that
there is are<br>
Unicode characters for blackboard bold letters. A common
solution<br>
in LaTeX would however code it as a blackboard bold font. I
have not<br>
checked the implementation of the bbm package, so I do not
know what<br>
that one does.<br>
<br>
Either way, I am not hellbent on using bbm; any solution
which works<br>
in both PDF and XML output is fine.<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
--<br>
:-- Hans Georg<br>
</font></span></blockquote>
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<br>
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