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<b>let </b><font color="Maroon" title="c1">X</font>, <font color="Maroon" title="c2">Y</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a> <a href="pre_topc.html#NM1" title="PRE_TOPC:NM.1">TopSpace</a>;<br/><b>let </b><font color="Maroon" title="c3">X1</font>, <font color="Maroon" title="c4">X0</font>, <font color="Maroon" title="c5">X2</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="pre_topc.html#M1" title="PRE_TOPC:mode.1">SubSpace</a> of <font color="Maroon" title="c1">X</font>;<br/>









<b>assume </b><a NAME="E1:86"/><i><font color="Green" title="E64">A1</font></i>: 
<font color="Maroon" title="c3">X1</font> is    <a href="pre_topc.html#M1" title="PRE_TOPC:mode.1">SubSpace</a> of <font color="Maroon" title="c4">X0</font>
 ;<br/>

<b>assume </b><a NAME="E2:86"/><i><font color="Green" title="E65">A2</font></i>: 
<font color="Maroon" title="c5">X2</font> is    <a href="pre_topc.html#M1" title="PRE_TOPC:mode.1">SubSpace</a> of <font color="Maroon" title="c3">X1</font>
 ;<br/>

<b>let </b><font color="Maroon" title="c6">g</font> be   <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c4">X0</font>,<font color="Maroon" title="c2">Y</font>;<br/>

<b>assume </b><a NAME="E3:86"/>
<font color="Maroon" title="c6">g</font> <a href="tmap_1.html#K3" title="TMAP_1:func.3">|</a> <font color="Maroon" title="c3">X1</font> is  <a href="pre_topc.html#V5" title="PRE_TOPC:attr.5">continuous</a> <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c3">X1</font>,<font color="Maroon" title="c2">Y</font>
 ;<br/>

<a NAME="E4:86"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon" title="c6">g</font> <a href="tmap_1.html#K3" title="TMAP_1:func.3">|</a> <font color="Maroon" title="c3">X1</font></span>)</span> <a href="tmap_1.html#K3" title="TMAP_1:func.3">|</a> <font color="Maroon" title="c5">X2</font> is  <a href="pre_topc.html#V5" title="PRE_TOPC:attr.5">continuous</a> <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c5">X2</font>,<font color="Maroon" title="c2">Y</font>
 
<b>by </b><i><a class="txt" href="tmap_1.html#E2:86"><i><font color="Green" title="E65">A2</font></i></a>, <a class="ref" href="tmap_1.html#T89" target="_self" title="TMAP_1:th.89">Th89</a></i>;<br/>
<b>hence </b><a NAME="E5:86"/>
<font color="Maroon" title="c6">g</font> <a href="tmap_1.html#K3" title="TMAP_1:func.3">|</a> <font color="Maroon" title="c5">X2</font> is  <a href="pre_topc.html#V5" title="PRE_TOPC:attr.5">continuous</a> <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c5">X2</font>,<font color="Maroon" title="c2">Y</font>
 <b>by </b><i><a class="txt" href="tmap_1.html#E1:86"><i><font color="Green" title="E64">A1</font></i></a>, <a class="txt" href="tmap_1.html#E2:86"><i><font color="Green" title="E65">A2</font></i></a>, <a class="ref" href="tmap_1.html#T79" target="_self" title="TMAP_1:th.79">Th79</a></i>;<br/>


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