ub-Riemannian Limits, Connections with Torsion and the Gauss-Bonnet Theorem for Four Dimensional Twisted BCV Spaces
LI Hong-feng, LIU Ke-feng, WANG Yong
Chinese Quarterly Journal of Mathematics . 2025, (2): 111 -134 .  DOI: 10.13371/j.cnki.chin.q.j.m.2025.02.001

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