Figure 3 . Coupled 4d/2d/0d quiver gauge theory realizing intersecting M2-brane surface defects labeled by symmetric representations, of rank n R and n L respectively, in a four-dimensional = 2 N linear quiver gauge theory. The two-dimensional degrees of freedom, depicted in = (2 ; 2) quiver N notation, are coupled to the four-dimensional ones through cubic and quartic superpotential cou- plings. The explicit superpotentials can be found in [21]. The zero-dimensional degrees of freedom, denoted using two-dimensional = (0 ; 2) quiver notations dimensionally reduced to zero dimen- N sions, with solid lines representing chiral multiplets, participate in E- and J-type superpotentials. (see also [38, 39]), which in the quiver gauge theory description of (cid:12)gure 3 translate