Asymptotic-freedom constraints on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">SU</mml:mi><mml:mn/><mml:mo>(</mml:mo><mml:mi>N</mml:mi><mml:mo>)</mml:mo><mml:mn/></mml:math>flavor grand unification

We discuss the restrictions on possible SU(N) flavor grand unifications coming from the requirements of asymptotic freedom on the grand unification coupling ...