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<b>reconsider </b><font color="Maroon">c<sub>2</sub></font> =  <a href="openlatt.html#K6" target="_self">Open_setLatt</a> <font color="Maroon">c<sub>1</sub></font> as   <a href="lattices.html#NM4">0_Lattice</a> <b>by </b><i><a class="ref" href="openlatt.html#T10" target="_self">Th10</a></i>;<br/>
<a NAME="E2:14_1_1"/>
<font color="Maroon">c<sub>2</sub></font> is   <a href="filter_0.html#NM2">I_Lattice</a>
 
<b>by </b><i><a class="ref" href="openlatt.html#T9" target="_self">Th9</a></i>;<br/>
<b>hence </b><a NAME="E3:14_1_1"/>
 <a href="openlatt.html#K6" target="_self">Open_setLatt</a> <font color="Maroon">c<sub>1</sub></font> is <a href="lattice2.html#V1">Heyting</a>
 <b>by </b><i><a class="ref" href="lattice2.html#D6">LATTICE2:def 6</a></i>;<br/>


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