omplexity</h4>
<p>Linear depending from the size of the vector expressions.</p>
<h4>Examples</h4>
<pre>
#include &lt;boost/numeric/ublas/vector.hpp&gt;
#include &lt;boost/numeric/ublas/io.hpp&gt;

int main () {
    using namespace boost::numeric::ublas;
    vector&lt;double&gt; v1 (3), v2 (3);
    for (unsigned i = 0; i &lt; std::min (v1.size (), v2.size ()); ++ i)
        v1 (i) = v2 (i) = i;

    std::cout &lt;&lt; v1 + v2 &lt;&lt; std::endl;
    std::cout &lt;&lt; v1 - v2 &lt;&lt; std::endl;
}
</pre>
<h3