I provide a theory of the metaphysical foundations of identity: an account of what grounds facts of the form \(a=b\). In particular, I defend the claim that indiscernibility grounds identity. This is typically rejected because it is viciously circular; plausible assumptions about the logic of ground entail that the fact that \(a=b\) partially grounds itself. The theory I defend is immune to this circularity.

中文翻译：

---

不可辨别性和身份的理由

我提供了身份的形而上学基础的理论：对\(a=b\)形式的事实的基础的说明。我特别捍卫“不可辨别性是身份的基础”这一主张。这通常会被拒绝，因为它是恶性循环的；关于接地逻辑的合理假设意味着\(a=b\)部分地接地这一事实。我所捍卫的理论不受这种循环的影响。