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<p class="MsoNormal"><span lang="EN-US">Hello,<span class="apple-converted-space"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My name is Konstantin Leyde, and I am a master student in physics at the ETH Zurich.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">For my thesis project, I have been working with the GiNaC library, and I have encountered an issue with the partial fractioning (sqrfree_parfrac) routine:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Unless I misunderstood the way the sqrfree_parfrac routine works, it
</span><span lang="EN-US">appears that for special cases, the output of the sqrfree_parfrac routine misses a numerical prefactor for one term, and thus returns the wrong answer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Please find attached a pdf, that explains the problem in more detail.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In this pdf (as well as separately) we have attached the code that shows the issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Many thanks in advance,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best wishes,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Konstantin<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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