SIGMA Lagrangian multiform for cyclotomic Gaudin models Vincent Caudrelier, Anup Anand Singh, and Benoît Vicedo SIGMA, Nov 2024 arXiv Journal LMP Lagrangian multiforms on coadjoint orbits for finite-dimensional integrable systems Vincent Caudrelier, Marta Dell’Atti, and Anup Anand Singh Letters in Mathematical Physics, Feb 2024 arXiv Journal CQG Entropy and the link action in the causal set path-sum Abhishek Mathur, Anup Anand Singh, and Sumati Surya Classical and Quantum Gravity, Dec 2020 arXiv Journal