document.write("« Exotica and the status of the strong cosmic censor conjecture in four dimensions. (arXiv:1707.09180v2 [gr-qc] UPDATED)");document.write(" | ");document.write("Faddeev-Jackiw quantization of topological invariants: Euler and Pontryagin classes. (arXiv:1711.11437v1 [hep-th]) »");