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<b>let </b><font color="Maroon" title="c1">R</font> be   <a href="funcsdom.html#NM1" title="FUNCSDOM:NM.1">Ring</a>;<br/><b>let </b><font color="Maroon" title="c2">G1</font>, <font color="Maroon" title="c3">G2</font>, <font color="Maroon" title="c4">G3</font>, <font color="Maroon" title="c5">G4</font> be   <a href="vectsp_2.html#NM6" title="VECTSP_2:NM.6">LeftMod</a> of <font color="Maroon" title="c1">R</font>;<br/><b>let </b><font color="Maroon" title="c6">f</font> be  <a href="mod_2.html#V2" title="MOD_2:attr.2">strict</a>  <a href="mod_2.html#M1" title="MOD_2:mode.1">Morphism</a> of <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c3">G2</font>;<br/><b>let </b><font color="Maroon" title="c7">g</font> be  <a href="mod_2.html#V2" title="MOD_2:attr.2">strict</a>  <a href="mod_2.html#M1" title="MOD_2:mode.1">Morphism</a> of <font color="Maroon" title="c3">G2</font>,<font color="Maroon" title="c4">G3</font>;<br/><b>let </b><font color="Maroon" title="c8">h</font> be  <a href="mod_2.html#V2" title="MOD_2:attr.2">strict</a>  <a href="mod_2.html#M1" title="MOD_2:mode.1">Morphism</a> of <font color="Maroon" title="c4">G3</font>,<font color="Maroon" title="c5">G4</font>;<br/>









<b>consider </b><font color="Maroon" title="c9">f0</font> being   <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c3">G2</font><b> such that </b><br/><a NAME="E2:34"/><i><font color="Green" title="E21">A1</font></i>: 
<font color="Maroon" title="c6">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c3">G2</font>,<font color="Maroon" title="c9">f0</font> #)
 <b>by </b><i><a class="ref" href="mod_2.html#T15" target="_self" title="MOD_2:th.15">Th15</a></i>;<br/>
<b>consider </b><font color="Maroon" title="c10">g0</font> being   <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c3">G2</font>,<font color="Maroon" title="c4">G3</font><b> such that </b><br/><a NAME="E4:34"/><i><font color="Green" title="E22">A2</font></i>: 
<font color="Maroon" title="c7">g</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c3">G2</font>,<font color="Maroon" title="c4">G3</font>,<font color="Maroon" title="c10">g0</font> #)
 <b>by </b><i><a class="ref" href="mod_2.html#T15" target="_self" title="MOD_2:th.15">Th15</a></i>;<br/>
<b>consider </b><font color="Maroon" title="c11">h0</font> being   <a href="struct_0.html#NM6" title="STRUCT_0:NM.6">Function</a> of <font color="Maroon" title="c4">G3</font>,<font color="Maroon" title="c5">G4</font><b> such that </b><br/><a NAME="E6:34"/><i><font color="Green" title="E23">A3</font></i>: 
<font color="Maroon" title="c8">h</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c4">G3</font>,<font color="Maroon" title="c5">G4</font>,<font color="Maroon" title="c11">h0</font> #)
 <b>by </b><i><a class="ref" href="mod_2.html#T15" target="_self" title="MOD_2:th.15">Th15</a></i>;<br/>
<a NAME="E7:34"/><i><font color="Green" title="E24">A4</font></i>: 
<font color="Maroon" title="c7">g</font> <a href="mod_2.html#K9" title="MOD_2:func.9">*'</a> <font color="Maroon" title="c6">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c4">G3</font>,<span class="p1">(<span class="default"><font color="Maroon" title="c10">g0</font> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <font color="Maroon" title="c9">f0</font></span>)</span> #)
 
<b>by </b><i><a class="txt" href="mod_2.html#E2:34"><i><font color="Green" title="E21">A1</font></i></a>, <a class="txt" href="mod_2.html#E4:34"><i><font color="Green" title="E22">A2</font></i></a>, <a class="ref" href="mod_2.html#T21" target="_self" title="MOD_2:th.21">Th21</a></i>;<br/>
<a NAME="E8:34"/><i><font color="Green" title="E25">A5</font></i>: 
<font color="Maroon" title="c8">h</font> <a href="mod_2.html#K9" title="MOD_2:func.9">*'</a> <font color="Maroon" title="c7">g</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c3">G2</font>,<font color="Maroon" title="c5">G4</font>,<span class="p1">(<span class="default"><font color="Maroon" title="c11">h0</font> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <font color="Maroon" title="c10">g0</font></span>)</span> #)
 
<b>by </b><i><a class="txt" href="mod_2.html#E4:34"><i><font color="Green" title="E22">A2</font></i></a>, <a class="txt" href="mod_2.html#E6:34"><i><font color="Green" title="E23">A3</font></i></a>, <a class="ref" href="mod_2.html#T21" target="_self" title="MOD_2:th.21">Th21</a></i>;<br/>
<font color="Maroon" title="c8">h</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <span class="p1">(<span class="default"><font color="Maroon" title="c7">g</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c6">f</font></span>)</span> = 
 <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c5">G4</font>,<span class="p1">(<span class="default"><font color="Maroon" title="c11">h0</font> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <span class="p2">(<span class="default"><font color="Maroon" title="c10">g0</font> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <font color="Maroon" title="c9">f0</font></span>)</span></span>)</span> #)
<b>by </b><i><a class="txt" href="mod_2.html#E6:34"><i><font color="Green" title="E23">A3</font></i></a>, <a class="txt" href="mod_2.html#E7:34"><i><font color="Green" title="E24">A4</font></i></a>, <a class="ref" href="mod_2.html#T21" target="_self" title="MOD_2:th.21">Th21</a></i>
<br/>.= 
 <a href="mod_2.html#G1" title="MOD_2:aggr.1">LModMorphismStr</a>(# <font color="Maroon" title="c2">G1</font>,<font color="Maroon" title="c5">G4</font>,<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c11">h0</font> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <font color="Maroon" title="c10">g0</font></span>)</span> <a href="partfun1.html#K1" title="PARTFUN1:func.1">*</a> <font color="Maroon" title="c9">f0</font></span>)</span> #)
<b>by </b><i><a class="ref" href="relat_1.html#T55" title="RELAT_1:th.55">RELAT_1:55</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c8">h</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c7">g</font></span>)</span> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c6">f</font>
<b>by </b><i><a class="txt" href="mod_2.html#E2:34"><i><font color="Green" title="E21">A1</font></i></a>, <a class="txt" href="mod_2.html#E8:34"><i><font color="Green" title="E25">A5</font></i></a>, <a class="ref" href="mod_2.html#T21" target="_self" title="MOD_2:th.21">Th21</a></i>
;<br/>
<b>hence </b><a NAME="E10:34"/>
<font color="Maroon" title="c8">h</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <span class="p1">(<span class="default"><font color="Maroon" title="c7">g</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c6">f</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c8">h</font> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c7">g</font></span>)</span> <a href="mod_2.html#K8" title="MOD_2:func.8">*</a> <font color="Maroon" title="c6">f</font>
 ;<br/>


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