Corner Structure of Four-Dimensional General Relativity in the Coframe Formalism

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Kaidi, Ohmori, Zheng, https://arxiv.org/abs/2111.01141

Del Zotto, García Etxebarria, Schäfer-Nameki, https://arxiv.org/abs/2203.10097

Delaney, Kim, Plavnik. https://arxiv.org/abs/2107.11374