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<div><span class="kw">theorem </span><a NAME="T75"><span class="comment"><font color="firebrick">:: CAT_4:75</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">C</font> being   <a href="cat_4.html#NM2" title="CAT_4:NM.2">Cocartesian_category</a><br/>  for <font color="Olive" title="b2">a</font>, <font color="Olive" title="b3">b</font> being   <a href="cat_1.html#NM1" title="CAT_1:NM.1">Object</a> of <font color="Olive" title="b1">C</font> holds  <span class="p1">(<span class="default"><a href="cat_1.html#K4" title="CAT_1:func.4">id</a> <font color="Olive" title="b2">a</font></span>)</span> <a href="cat_4.html#K31" title="CAT_4:func.31">+</a> <span class="p1">(<span class="default"><a href="cat_1.html#K4" title="CAT_1:func.4">id</a> <font color="Olive" title="b3">b</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cat_1.html#K4" title="CAT_1:func.4">id</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">a</font> <a href="cat_4.html#K20" title="CAT_4:func.20">+</a> <font color="Olive" title="b3">b</font></span>)</span></div></div>
