论文标题
表征不变的沙珀：第一眼
Characterizing immutable sandpiles: A first look
论文作者
论文摘要
通过在$ \ mathbb {z} $或$ \ mathbb {r} $中使用系数，可以在图上定义两个不同的稳定性概念。当这些概念同意时，我们称沙珀斯不可变。我们的主要结果给出了大量不变的沙板的线性代数特征。
By working with coefficients in $\mathbb{Z}$ or $\mathbb{R}$, one can define two different notions of stability for a sandpile on a graph. We call a sandpile immutable when these notions agree. Our main results give linear-algebraic characterizations for large classes of immutable sandpiles.
