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    <p>Hi Erik,</p>
    <p>Yes it is a very interesting problem, and a hard one.<br>
    </p>
    <p>Nigel, Denis and I have been working hard the last year and have
      managed to implement a complete CCM algorithm that joins a BSSN
      evolution through CTGamma with a null evolution through
      NullCodeSpec. On-the-fly extraction-only works very well with BBH,
      however full CCM seems to be unstable even for Minkowski
      space-time. We are working on implementing a slightly simpler,
      slightly different implementation to help identify the cause of
      this; it has been very difficult to isolate.<br>
    </p>
    <p>We will surely take you up on your offer of advice, I have
      already received superb answered to questions on this mailing
      list.</p>
    <p>Cheers,</p>
    <p>Chris<br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 12/17/18 5:24 PM, Erik Schnetter
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CADKQjjfjHbSgwwFMFne2sAoO_vdytinW1O-ssTjen7V_A9YZjA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">Chris
        <div><br>
        </div>
        <div>This is an exciting topic.</div>
        <div><br>
        </div>
        <div>I assume the meat of the problem lies in the formulation of
          the equations, discrete stability, etc. In case you get stuck
          on an infrastructure problem instead (i.e. something related
          to Cactus, Carpet, scheduling, etc.), I'd (and probably others
          on this list) will be happy to assist.</div>
        <div><br>
        </div>
        <div>-erik</div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div><br>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Sun, Dec 16, 2018 at 1:53 PM Chris Stevens
          &lt;<a href="mailto:c.stevens@ru.ac.za" moz-do-not-send="true">c.stevens@ru.ac.za</a>&gt;
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
          <div bgcolor="#FFFFFF">
            <p>Hi everyone,</p>
            <p>a two year postdoc is available to further develop code
              for Cauchy Characteristic Matching in the Cactus
              framework. Please see the below hyperspace ad for details.<br>
            </p>
            <p><a
                class="gmail-m_-1998447782693605500moz-txt-link-freetext"
href="https://hyperspace.uni-frankfurt.de/2018/12/14/postdoctoral-position-in-numerical-relativity-rhodes-university-south-africa/"
                target="_blank" moz-do-not-send="true">https://hyperspace.uni-frankfurt.de/2018/12/14/postdoctoral-position-in-numerical-relativity-rhodes-university-south-africa/</a></p>
            <p>Closing date is 16th January.</p>
            <p>Cheers,</p>
            <p>Chris<br>
            </p>
            <div class="gmail-m_-1998447782693605500moz-signature">-- <br>
              <div class="gmail-m_-1998447782693605500moz-signature">
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                        <p class="gmail-m_-1998447782693605500western"
                          style="margin-top:0.19in"><font
                            color="#1f497d"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b><br>
                                    </b></font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b>Dr
                                  Chris Stevens</b></font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b><br>
                                    </b></font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b>Lecturer</b></font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">: </font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">Mathematics</font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"> </font></font></font><font
                            color="#1f497d"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><br>
                                  </font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">Facult</font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">y of
                                Science</font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><br>
                                  t: +27 (0) 46 603 </font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">7547</font></font></font><font
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                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">1
                                Artillery Road,</font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">
                                Grahamstown, 6139</font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b>  </b></font></font></font><font
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                                    </b></font></font></font><font
                            color="#7b1272"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2">PO Box
                                94, Grahamstown, 6140, South Africa<br>
                                 </font></font></font><font
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                                style="font-size:9pt" size="2"><font
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                                    face="Arial,&#xA; serif"><font
                                      style="font-size:9pt" size="2"><b>
                                      </b></font></font></font><a
                                  href="http://www.ru.ac.za"
                                  target="_blank" moz-do-not-send="true"><font
                                    color="#00aec7"><font face="Arial,
                                      serif"><font style="font-size:9pt"
                                        size="2"><b>www.ru.ac.za</b></font></font></font></a></font></font></font><font
                            color="#1f497d"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b>   </b></font></font></font><font
                            color="#1f497d"><font face="Arial, serif"><font
                                style="font-size:9pt" size="2"><b><a
                                    href="http://www.chrisdoesmaths.com/"
                                    target="_blank"
                                    moz-do-not-send="true"><font
                                      color="#7b1272"><font face="Arial,
                                        serif"><font
                                          style="font-size:9pt" size="2"><font
                                            color="#00aec7"><font
                                              face="Arial,&#xA; serif"><font
                                                style="font-size:9pt"
                                                size="2"><b>www.</b></font></font></font><font
                                            color="#00aec7"><font
                                              face="Arial,&#xA; serif"><font
                                                style="font-size:9pt"
                                                size="2"><b>c</b></font></font></font><font
                                            color="#00aec7"><font
                                              face="Arial,&#xA; serif"><font
                                                style="font-size:9pt"
                                                size="2"><u><b>hrisdoesmaths.com</b></u></font></font></font></font></font></font></a> 
                                  <br>
                                </b></font></font></font></p>
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      <br clear="all">
      <div><br>
      </div>
      -- <br>
      <div dir="ltr" class="gmail_signature">
        <div dir="ltr">
          <div>Erik Schnetter &lt;<a href="mailto:schnetter@cct.lsu.edu"
              target="_blank" moz-do-not-send="true">schnetter@cct.lsu.edu</a>&gt;<br>
            <a
              href="http://www.perimeterinstitute.ca/personal/eschnetter/"
              target="_blank" moz-do-not-send="true">http://www.perimeterinstitute.ca/personal/eschnetter/</a></div>
          <div><br>
          </div>
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    </blockquote>
    <div class="moz-signature">-- <br>
      <div class="moz-signature">
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                #595959;&#xA; padding-top: 0in;&#xA; padding-bottom:
                0in; padding-left: 0in;&#xA; padding-right: 0.2in"
                width="161"><img moz-do-not-send="false"
                  src="cid:part3.553D8449.711669E4@ru.ac.za" alt="ru"
                  width="152" height="95"></td>
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                <p class="western" style="margin-top: 0.19in"><font
                    color="#1f497d"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b><br>
                            </b></font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b>Dr Chris
                          Stevens</b></font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b><br>
                            </b></font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b>Lecturer</b></font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2">: </font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2">Mathematics</font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"> </font></font></font><font
                    color="#1f497d"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><br>
                          </font></font></font><font color="#7b1272"><font
                      face="Arial, serif"><font style="font-size: 9pt"
                        size="2">Facult</font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2">y of Science</font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><br>
                          t: +27 (0) 46 603 </font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2">7547</font></font></font><font
                    color="#009d93"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><br>
                          </font></font></font><font color="#7b1272"><font
                      face="Arial, serif"><font style="font-size: 9pt"
                        size="2">1 Artillery Road,</font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"> Grahamstown,
                        6139</font></font></font><font color="#7b1272"><font
                      face="Arial, serif"><font style="font-size: 9pt"
                        size="2"><b>  </b></font></font></font><font
                    color="#1f497d"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b><br>
                            </b></font></font></font><font
                    color="#7b1272"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2">PO Box 94,
                        Grahamstown, 6140, South Africa<br>
                         </font></font></font><font color="#7b1272"><font
                      face="Arial, serif"><font style="font-size: 9pt"
                        size="2"><font color="#009d93"><font
                            face="Arial,&#xA; serif"><font
                              style="font-size: 9pt" size="2"><b> </b></font></font></font><a
                          href="http://www.ru.ac.za"
                          moz-do-not-send="true"><font color="#00aec7"><font
                              face="Arial, serif"><font
                                style="font-size: 9pt" size="2"><b>www.ru.ac.za</b></font></font></font></a></font></font></font><font
                    color="#1f497d"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b>   </b></font></font></font><font
                    color="#1f497d"><font face="Arial, serif"><font
                        style="font-size: 9pt" size="2"><b><a
                            href="http://www.chrisdoesmaths.com/"
                            moz-do-not-send="true"><font color="#7b1272"><font
                                face="Arial, serif"><font
                                  style="font-size:&#xA; 9pt" size="2"><font
                                    color="#00aec7"><font face="Arial,
                                      serif"><font style="font-size:
                                        9pt" size="2"><b>www.</b></font></font></font><font
                                    color="#00aec7"><font face="Arial,
                                      serif"><font style="font-size:
                                        9pt" size="2"><b>c</b></font></font></font><font
                                    color="#00aec7"><font face="Arial,
                                      serif"><font style="font-size:
                                        9pt" size="2"><u><b>hrisdoesmaths.com</b></u></font></font></font></font></font></font></a> 
                          <br>
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