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<b>reconsider </b><font color="Maroon" title="c4">a</font> = <font color="Maroon" title="c2">a</font>, <font color="Maroon" title="c5">b</font> = <font color="Maroon" title="c3">b</font> as    <a href="fraenkel.html#M2" title="FRAENKEL:mode.2">Element</a> of  <a href="fraenkel.html#K1" title="FRAENKEL:func.1">Funcs</a> <font color="Maroon" title="c1">Y</font>,<a href="margrel1.html#K6" title="MARGREL1:func.6">BOOLEAN</a>  <b>by </b><i><a class="ref" href="bvfunc_1.html#D4" title="BVFUNC_1:def.4">BVFUNC_1:def 4</a></i>;<br/>
<a NAME="E2:4_1_1"/>
<font color="Maroon" title="c4">a</font> <a href="bvfunc26.html#K3" title="BVFUNC26:func.3">'nand'</a> <font color="Maroon" title="c5">b</font> is    <a href="fraenkel.html#M2" title="FRAENKEL:mode.2">Element</a> of  <a href="fraenkel.html#K1" title="FRAENKEL:func.1">Funcs</a> <font color="Maroon" title="c1">Y</font>,<a href="margrel1.html#K6" title="MARGREL1:func.6">BOOLEAN</a> 
 
;<br/>
<b>hence </b><a NAME="E3:4_1_1"/>
<font color="Maroon" title="c2">a</font> <a href="bvfunc26.html#K1" title="BVFUNC26:func.1">'nand'</a> <font color="Maroon" title="c3">b</font> is    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="bvfunc_1.html#K1" title="BVFUNC_1:func.1">BVF</a> <font color="Maroon" title="c1">Y</font>
 <b>by </b><i><a class="ref" href="bvfunc_1.html#D4" title="BVFUNC_1:def.4">BVFUNC_1:def 4</a></i>;<br/>


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