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<b>let </b><font color="Maroon">c<sub>2</sub></font> be    <a href="closure1.html#L1" target="_self">MSClosureStr</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>

<b>assume </b><a NAME="E1:59_1_1"/>
<font color="Maroon">c<sub>2</sub></font> is <a href="closure1.html#V7" target="_self">absolutely-additive</a>
 ;<br/>

<a NAME="E2:59_1_1"/><b>then </b><i><font color="Green">E22</font></i>: 
the <a href="closure1.html#U1" target="_self">Family</a> of <font color="Maroon">c<sub>2</sub></font> is <a href="mssubfam.html#V2">absolutely-additive</a>
 
<b>by </b><i><a class="ref" href="closure1.html#D7" target="_self">Def7</a></i>;<br/>
<a NAME="E3:59_1_1"/>
for <font color="Olive">b<sub>1</sub></font> being   <a href="hidden.html#M1">set</a> <br/>for <font color="Olive">b<sub>2</sub></font> being   <a href="pboole.html#M1">ManySortedSet</a> of <font color="Olive">b<sub>1</sub></font><br/>for <font color="Olive">b<sub>3</sub></font> being <a href="mssubfam.html#V2">absolutely-additive</a> <a href="mssubfam.html#NM1">MSSubsetFamily</a> of <font color="Olive">b<sub>2</sub></font> holds <font color="Olive">b<sub>3</sub></font> is <a href="mssubfam.html#V1">additive</a>
 
;<br/>
<b>hence </b><a NAME="E4:59_1_1"/>
the <a href="closure1.html#U1" target="_self">Family</a> of <font color="Maroon">c<sub>2</sub></font> is <a href="mssubfam.html#V1">additive</a>
 <b>by </b><i><a class="txt" href="closure1.html#E2:59_1_1"><i><font color="Green">E22</font></i></a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="closure1.html#D6" target="_self">CLOSURE1:def 6</a><br/>


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