Necessary and sufficient conditions on monogamy of multipartite entanglement Wei Chen, Yan-ling Wang, Zhi-Xiang Jin, Shao-Ming Fei and Yanmin Yang Eur. Phys. J. Plus, 140 7 (2025) 635 Published online: 06 July 2025 DOI: 10.1140/epjp/s13360-025-06570-z