">BOOST_STATIC_CONSTANT</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">,</span> <span class="identifier">value</span> <span class="special">=</span> <span class="special">(</span><span class="identifier">has_inverse</span><span class="special">&lt;</span> <span class="identifier">CodomainT</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">value</span><span class="special">)</span><span class="special">)</span><span