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<b>take </b>
 <a href="metric_1.html#G1">MetrStruct</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>,<a href="metric_1.html#K3">Empty^2-to-zero</a>  #)
;<br/>

<b>thus </b><a NAME="E1:14_1_1"/>
(  <a href="metric_1.html#G1">MetrStruct</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>,<a href="metric_1.html#K3">Empty^2-to-zero</a>  #) is <a href="metric_1.html#V6">Reflexive</a> &amp;  <a href="metric_1.html#G1">MetrStruct</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>,<a href="metric_1.html#K3">Empty^2-to-zero</a>  #) is <a href="sub_metr.html#V2" target="_self">Discerning</a> &amp;  <a href="metric_1.html#G1">MetrStruct</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>,<a href="metric_1.html#K3">Empty^2-to-zero</a>  #) is <a href="metric_1.html#V8">symmetric</a> &amp;  <a href="metric_1.html#G1">MetrStruct</a>(# <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K1">}</a></span>,<a href="metric_1.html#K3">Empty^2-to-zero</a>  #) is <a href="metric_1.html#V9">triangle</a> )
 ;<br/>


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