lgodiff_ops_builder_sig/module-type-Sig/index.html#type-elt">elt</a> := <a href="Make/argument-1-Core/A/index.html#type-elt">Core.A.elt</a></span>
     <span class="keyword">and</span> <span><span class="keyword">type</span> <a href="../Owl_algodiff_ops_builder_sig/module-type-Sig/index.html#type-arr">arr</a> := <a href="Make/argument-1-Core/A/index.html#type-arr">Core.A.arr</a></span>
     <span class="keyword">and</span> <span><span class="keyword">type</span> <a href="../Owl_algodiff_ops_builder_sig/modu