A Hodge - De Rham Dirac operator on the quantum ${\rm SU}(2)$
  We describe how it is possible to describe irreducible actions of the Hodge - de Rham Dirac operator upon the exterior algebra over the quantum spheres ${\rm SU}_q(2)$ equipped with a three dimensional left covariant calculus. 
Fabio Di Cosmo, Giuseppe Marmo, Juan Manuel P\'erez-Pardo, Alessandro   Zampini
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