<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:12pt"><div style="font-family: lucida console,sans-serif;"><font size="3"><span><br></span></font></div><div style="font-family: lucida console,sans-serif;"><font size="3"><span>Dear sir;</span></font></div><pre style="font-family: lucida console,sans-serif;"><font size="3"><i><br>I want to calculate the phonon dispersion for ZnO along the</i><i> high symmetry<br> points; but i don't knew how to chose the construction of the high symmetry points <br>for hexagonal structure.<br></i><i><br></i><i>How does one decide on the path and symmetry of q-points?<br><br></i>Thanks to all,<i><br></i></font></pre><div style="font-family: lucida console,sans-serif;"><font size="3"><br> </font></div><div style="font-family: lucida console,sans-serif;"><font size="3">BOUTAIBA Farouk</font></div><div style="font-family: lucida
console,sans-serif;"><font size="3">University of Science and Technology of Oran</font></div><div style="font-family: lucida console,sans-serif;"><font size="3">Department of
Physics</font></div><div style="font-family: lucida console,sans-serif;"><font size="3">P.O.Box:1505 El M'Naouer Bir el Djir</font></div><font style="font-family: lucida console,sans-serif;" size="3">Oran Algeria</font><div><br></div></div></body></html>