{\bf Again $x + x^2y + z^2 + t^3 =  0$}

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\centerline{Lenny Makar-Limanov, Wayne State University}


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\noindent  In the talk I am going to explain what is
$AK$-invariant and give a complete computation of this
invariant for the threefold $x + x^2y + z^2 + t^3 =  0$.

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