The relative $\mathcal{L}$-invariant of a compact $4$-manifold

Nickolas A. Castro, Gabriel Islambouli, Maggie Miller +1

In this paper, we introduce the relative $\mathcal{L}$-invariant $r\mathcal{L}(X)$ of a smooth, orientable, compact 4-manifold $X$ with boundary. This invariant is defined by measu…