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<b>let </b><font color="Maroon" title="c4">x</font>, <font color="Maroon" title="c5">y</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">M</font>;<br/>

<b>assume </b><a NAME="E1:3_1_1"/>
<font color="Maroon" title="c4">x</font> <a href="metric_2.html#R1" title="METRIC_2:pred.1">tolerates</a> <font color="Maroon" title="c5">y</font>
 ;<br/>

<a NAME="E2:3_1_1"/><b>then </b>
 <a href="metric_1.html#K4" title="METRIC_1:func.4">dist</a> <font color="Maroon" title="c4">x</font>,<font color="Maroon" title="c5">y</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 0
 
<b>by </b><i><a class="ref" href="metric_2.html#D1" target="_self" title="METRIC_2:def.1">Def1</a></i>;<br/>
<b>hence </b><a NAME="E3:3_1_1"/>
<font color="Maroon" title="c5">y</font> <a href="metric_2.html#R1" title="METRIC_2:pred.1">tolerates</a> <font color="Maroon" title="c4">x</font>
 <b>by </b><i><a class="ref" href="metric_2.html#D1" target="_self" title="METRIC_2:def.1">Def1</a></i>;<br/>


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