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<b>reconsider </b><font color="Maroon">c<sub>2</sub></font> =  <a href="relat_1.html#K2">rng</a> the <a href="unialg_1.html#U1">charact</a> of <font color="Maroon">c<sub>1</sub></font> as  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a>  <b>by </b><i><a class="ref" href="finseq_1.html#T27">FINSEQ_1:27</a></i>;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="10_1_1_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">c<sub>3</sub></font> be    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">c<sub>2</sub></font>;<br/><b>consider </b><font color="Maroon">c<sub>4</sub></font> being   <a href="nat_1.html#NM1">Nat</a><b> such that </b><br/><a NAME="E2:10_1_1_1"/><i><font color="Green">E5</font></i>: 
( <font color="Maroon">c<sub>4</sub></font> <a href="hidden.html#R2">in</a>  <a href="finseq_1.html#K4">dom</a> the <a href="unialg_1.html#U1">charact</a> of <font color="Maroon">c<sub>1</sub></font> &amp; the <a href="unialg_1.html#U1">charact</a> of <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> <font color="Maroon">c<sub>4</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>3</sub></font> )
 <b>by </b><i><a class="ref" href="finseq_2.html#T11">FINSEQ_2:11</a></i>;<br/><b>reconsider </b><font color="Maroon">c<sub>5</sub></font> = the <a href="unialg_1.html#U1">charact</a> of <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> <font color="Maroon">c<sub>4</sub></font> as   <a href="unialg_2.html#NM4">PartFunc</a> of <font color="Maroon">c<sub>1</sub></font> <b>by </b><i><a class="txt" href="unialg_2.html#E2:10_1_1_1"><i><font color="Green">E5</font></i></a>, <a class="ref" href="unialg_1.html#T5">UNIALG_1:5</a></i>;<br/><a NAME="E4:10_1_1_1"/>
( <font color="Maroon">c<sub>5</sub></font> is <a href="unialg_1.html#V1">homogeneous</a> &amp; <font color="Maroon">c<sub>5</sub></font> is <a href="unialg_1.html#V2">quasi_total</a> &amp; not <font color="Maroon">c<sub>5</sub></font> is <a href="xboole_0.html#V1">empty</a> )
 <b>by </b><i><a class="txt" href="unialg_2.html#E2:10_1_1_1"><i><font color="Green">E5</font></i></a>, <a class="ref" href="funct_1.html#D15">FUNCT_1:def 15</a>, <a class="ref" href="unialg_1.html#D4">UNIALG_1:def 4</a>, <a class="ref" href="unialg_1.html#D5">UNIALG_1:def 5</a></i>;<br/><b>hence </b><a NAME="E5:10_1_1_1"/>
<font color="Maroon">c<sub>3</sub></font> is  non <a href="xboole_0.html#V1">empty</a> <a href="unialg_1.html#V1">homogeneous</a> <a href="unialg_1.html#V2">quasi_total</a> <a href="unialg_2.html#NM4">PartFunc</a> of <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="unialg_2.html#E2:10_1_1_1"><i><font color="Green">E5</font></i></a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E3:10_1_1"/>
 <a href="relat_1.html#K2">rng</a> the <a href="unialg_1.html#U1">charact</a> of <font color="Maroon">c<sub>1</sub></font> is   <a href="unialg_2.html#NM3">PFuncsDomHQN</a> of <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="unialg_2.html#D1" target="_self">Def1</a></i>;<br/>


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