The HasRightZero( m ) command returns true if the magma m has a right zero element, and returns false otherwise.

$\mathrm{with}\left(\mathrm{Magma}\right)\:$

$m≔⟨⟨⟨1\|2\|3⟩\,⟨1\|3\|1⟩\,⟨1\|1\|1⟩⟩⟩$

$m≔\left[\begin{array}{ccc}1& 2& 3\\ 1& 3& 1\\ 1& 1& 1\end{array}\right]$

$\mathrm{HasRightZero}\left(m\right)$

$\mathrm{true}$

The Magma[HasRightZero]   command was introduced in Maple 15.

For more information on Maple 15 changes, see Updates in Maple 15.