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Dear Troyer,</div>
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Thanks so much for your response. Your answer has solved my question. I am sorry but I have another small question here. Whether a pure graph can use "type" attribute in EDGE as in a UNITCELL? I tried to use it but got some puzzling results.</div>
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Best regards,</div>
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Rongyang</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>发件人:</b> Comp-phys-alps-users <comp-phys-alps-users-bounces@lists.phys.ethz.ch> 代表 Matthias Troyer <troyer@phys.ethz.ch><br>
<b>发送时间:</b> 2017年11月9日 7:19<br>
<b>收件人:</b> comp-phys-alps-users@lists.phys.ethz.ch<br>
<b>主题:</b> Re: [ALPS-users] How to count dimension of graph defined in Lattice xml library</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Arbitrary graphs don’t have a “dimension”. Only lattices do.<br class="">
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<div class="">On 9 Nov 2017, at 14:12, Sun Rongyang <<a href="mailto:sun-rongyang@outlook.com" class="">sun-rongyang@outlook.com</a>> wrote:</div>
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Dear all,</div>
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The definition method of a lattice in ALPS is delicate. But I meet a problem about dimension counting of a pure graph. On the one hand, I define an pure anisotropic graph as:</div>
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*************************************************************************************************</div>
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<div class=""><GRAPH name="anisotropic open ladder graph test"></div>
<div class=""> <!-- type="0" means horizontal; type="1" means vertical --></div>
<div class=""> <EDGE tyep="0" source="1" target="2"/></div>
<div class=""> <EDGE tyep="0" source="2" target="3"/></div>
<div class=""> <EDGE tyep="0" source="3" target="4"/></div>
<div class=""> <EDGE tyep="0" source="4" target="5"/></div>
<div class=""> <EDGE tyep="0" source="6" target="7"/></div>
<div class=""> <EDGE tyep="0" source="7" target="8"/></div>
<div class=""> <EDGE tyep="0" source="8" target="9"/></div>
<div class=""> <EDGE tyep="0" source="9" target="10"/></div>
<div class=""> <EDGE tyep="1" source="1" target="6"/></div>
<div class=""> <EDGE tyep="1" source="2" target="7"/></div>
<div class=""> <EDGE tyep="1" source="3" target="8"/></div>
<div class=""> <EDGE tyep="1" source="4" target="9"/></div>
<div class=""> <EDGE tyep="1" source="5" target="10"/></div>
<div class=""></GRAPH></div>
<div class=""><span class=""><span class="" style="font-family:Calibri,Helvetica,sans-serif; font-size:16px; font-style:normal">*************************************************************************************************</span></span><br class="">
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<div class="">On the other hand, I use the default LATTICEGRAPH "open ladder", I copy here:</div>
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<div class=""><span class=""><span class="" style="font-family:Calibri,Helvetica,sans-serif; font-size:16px; font-style:normal">*************************************************************************************************</span></span><br class="">
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<div class=""><LATTICE name="square lattice" dimension="2"></div>
<div class=""> <PARAMETER name="a" default="1"/></div>
<div class=""> <BASIS><VECTOR>a 0</VECTOR><VECTOR>0 a</VECTOR></BASIS></div>
<div class=""> <RECIPROCALBASIS><VECTOR>2*pi/a 0</VECTOR><VECTOR>0 2*pi/a</VECTOR></RECIPROCALBASIS></div>
<div class=""></LATTICE></div>
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<div class=""><UNITCELL name="anisotropic2d" dimension="2"></div>
<div class=""> <VERTEX/></div>
<div class=""> <EDGE type="0"><SOURCE vertex="1" offset="0 0"/><TARGET vertex="1" offset="1 0"/></EDGE></div>
<div class=""> <EDGE type="1"><SOURCE vertex="1" offset="0 0"/><TARGET vertex="1" offset="0 1"/></EDGE></div>
<div class=""></UNITCELL></div>
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<div class=""><LATTICEGRAPH name = "open ladder" vt_name="OpenLadderLattice"></div>
<div class=""> <FINITELATTICE></div>
<div class=""> <LATTICE ref="square lattice"/></div>
<div class=""> <PARAMETER name="W" default="2"/></div>
<div class=""> <EXTENT dimension="1" size="L"/></div>
<div class=""> <EXTENT dimension="2" size="W"/></div>
<div class=""> <BOUNDARY dimension="1" type="open"/></div>
<div class=""> <BOUNDARY dimension="2" type="open"/></div>
<div class=""> </FINITELATTICE></div>
<div class=""> <UNITCELL ref="anisotropic2d"/></div>
<div class=""></LATTICEGRAPH></div>
</span><span class=""><span class="" style="font-family:Calibri,Helvetica,sans-serif; font-size:16px; font-style:normal">*************************************************************************************************</span></span><br class="">
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</span>with parameters L=2, W=5. Will they be treated as the same in ALPS? Or the graph equals as L=5,W=2 open ladder?</div>
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Thanks a lot!</div>
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Best regards,</div>
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Rongyang Sun</div>
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