Sandpile groups of Cayley graphs of ๐ฝ <sup>r</sup> <sub>2</sub>
Sandpile groups of Cayley graphs of ๐ฝ <sup>r</sup> <sub>2</sub>
The sandpile group of a connected graph G, defined to be the torsion part of the cokernel of the graph Laplacian, is a subtle graph invariant with combinatorial, algebraic, and geometric descriptions. Extending and improving previous works on the sandpile group of hypercubes, we study the sandpile groups of the โฆ