  The relation between open topological strings and representation theory of
symmetric quivers is explored beyond the original setting of the knot-quiver
correspondence. Multiple cover generalizations of the skein relation for
boundaries of holomorphic disks on a Lagrangian brane are observed to generate
dual quiver descriptions of the geometry. Embedding into M-theory, a large
class of dualities of 3d $\mathcal{N}=2$ theories associated to quivers is
obtained. The multi-cover skein relation admits a compact formulation in terms
of quantum torus algebras associated to the quiver and in this language the
relations are similar to wall-crossing identities of Kontsevich and Soibelman.
