In the present paper we extend the definition of slice-torus invariant to links. We prove a few properties of the newly-defined slice-torus link invariants: the behaviour under crossing change, a slice genus bound, an obstruction to strong sliceness, and a combinatorial bound. Furthermore, we provide an application to the computation of the splitting number. Finally, we use the slice-torus link invariants, and the Whitehead doubling to define new strong concordance invariants for links, which are proven to be independent from the corresponding slice-torus link invariant.

中文翻译：

---

SLICE-TORUS 一致性不变量和链接的白头双倍

在本文中，我们将切片环不变量的定义扩展到链接。我们证明了新定义的切片环面链接不变量的一些属性：交叉变化下的行为、切片属界、对强切片的阻碍和组合界限。此外，我们提供了一个计算分裂数的应用程序。最后，我们使用 slice-torus 链接不变量和 Whitehead 加倍为链接定义新的强一致性不变量，这些变量被证明独立于相应的 slice-torus 链接不变量。