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 <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="diff_1.html#K7" target="_self">cD</a> <font color="Maroon">f</font>,<font color="Maroon">h</font></span>)</span> = 
<span class="p1">(<span class="default"><a href="relset_1.html#K4">dom</a> <span class="p2">(<span class="default"><a href="diff_1.html#K2" target="_self">Shift</a> <font color="Maroon">f</font>,<span class="p3">(<span class="default"><font color="Maroon">h</font> <a href="xcmplx_0.html#K7">/</a> 2</span>)</span></span>)</span></span>)</span> <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><a href="relset_1.html#K4">dom</a> <span class="p2">(<span class="default"><a href="diff_1.html#K2" target="_self">Shift</a> <font color="Maroon">f</font>,<span class="p3">(<span class="default"><a href="xcmplx_0.html#K4">-</a> <span class="p4">(<span class="default"><font color="Maroon">h</font> <a href="xcmplx_0.html#K7">/</a> 2</span>)</span></span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="seq_1.html#D4">SEQ_1:def 4</a></i>
<br/>.= 
<a href="numbers.html#K1">REAL</a>  <a href="subset_1.html#K9">/\</a> <span class="p1">(<span class="default"><a href="relset_1.html#K4">dom</a> <span class="p2">(<span class="default"><a href="diff_1.html#K2" target="_self">Shift</a> <font color="Maroon">f</font>,<span class="p3">(<span class="default"><a href="xcmplx_0.html#K4">-</a> <span class="p4">(<span class="default"><font color="Maroon">h</font> <a href="xcmplx_0.html#K7">/</a> 2</span>)</span></span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>
<br/>.= 
<a href="numbers.html#K1">REAL</a>  <a href="xboole_0.html#K3">/\</a> <a href="numbers.html#K1">REAL</a> 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>
<br/>.= 
 <a href="numbers.html#K1">REAL</a> 

;<br/>
<b>hence </b><a NAME="E2:9_1_1"/>
 <a href="diff_1.html#K7" target="_self">cD</a> <font color="Maroon">f</font>,<font color="Maroon">h</font> is   <a href="funct_2.html#NM1">Function</a> of  <a href="numbers.html#K1">REAL</a> , <a href="numbers.html#K1">REAL</a> 
 <b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>


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