Review Article

BPS States, Crystals, and Matrices

Figure 20

Refined pyramid crystal for the resolution of 3 / 2 singularity, in the chamber corresponding to 𝑛 stones in the top row, as seen from the bottom (i.e., a negative direction of 𝑧 -axis). Even though the three-dimensional shape of the crystal is different than in the conifold case, the assignment of colors is the same, see Figure 19.
357016.fig.0020