I have two matrices, m1 and m2. So long as they are the same size (currently both are 2x2) then the following statement works just fine:<br><span style="font-weight: bold;"><span style="font-weight: bold;"></span><br>cout &lt;&lt; prod(m1, m2) &lt;&lt; endl; 
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<br>However, when I change the size of either matrices I get the following error at compile time:<br><br><div style="margin-left: 40px;"><span style="font-family: courier new,monospace;">Assertion failed in file /usr/include/boost/numeric/ublas/functional.hpp at line 1212:
</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">size1 == size2</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">
terminate called after throwing an instance of 'boost::numeric::ublas::bad_argument'</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">&nbsp; what():&nbsp; bad argument</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">Aborted</span><br></div><br><br>Does anyone know what I am doing wrong?<br>