On the Mathieu conjecture for $SU(2)$
  We study the Mathieu Conjecture for $SU(2)$ using the matrix elements of its unitary irreducible representations. We state a conjecture for the particular case $SU(2)$ implying the Mathieu Conjecture for $SU(2)$. 
Teun Dings, Erik Koelink
math.RT