https://neckpinch.com/authors/bang-yen-chen/New arXiv papers by Bang-Yen Chen, from Neckpinch Tue, 03 Nov 2026 07:15:30 GMT https://arxiv.org/abs/2610.38723arxiv:2610.38723Wed, 28 Oct 2026 00:00:00 GMTAliya Naaz Siddiqui, Bang-Yen Chen — Statistical manifolds, introduced by Amari in information geometry, carry a pair of dual torsion-free connections (∇,∇^(*)) together with a Riemannian metric. In this chapter we survey the theory of statistical solitons, that is, vector fields and constants that solve the Ricci-soliton equation simultaneously for ∇ and ∇^(*), together with the statistical analogue of almost quasi-Yamabe solitons. We discuss two principal settings: (i) statistical warped products R×_f N₂ and N₁×_fR for (pseudo) Riemannian manifolds N₁ and N₂, where the soliton equation constrains the warping function; and (ii) statistical submanifolds of Kenmotsu statistical manifolds, where the position of the Reeb field ξ relative to the submanifold and the presence of concircular or concurrent vector fields determine the Einstein, η-Einstein or quasi-Einstein character of the submanifold. We further review the results of Blaga and Chen on gradient solitons and statistical structures, in particular the connections ∇^θ defined by a 1-form, volume formulas and bounds for the Ricci tensor. We also describe Chen-type inequalities for statistical warped product submanifolds, which give the extrinsic context in which such solitons live. Key steps of the proofs, remarks on the sharpness of hypotheses, worked examples, and open problems are included.Ricci solitonsAlmost & η-Ricci solitonsRotational symmetry & warped productsSasakian & contact geometry https://arxiv.org/abs/2408.05312arxiv:2408.05312Fri, 09 Aug 2024 00:00:00 GMTBang-Yen Chen, Majid Ali Choudhary, Mohammed Nisar, Mohd Danish Siddiqi — In Riemannian geometry, Ricci soliton inequalities are an important field of study that provide profound insights into the geometric and analytic characteristics of Riemannian manifolds. An extensive study of Ricci soliton inequalities is given in this review article, which also summarizes their historical evolution, core ideas, important findings, and applications. We investigate the complex interactions between curvature conditions and geometric inequalities as well as the several kinds of Ricci solitons, such as expanding, steady, and shrinking solitons. We also go over current developments, unresolved issues, and possible paths for further study in this fascinating area.Ricci solitonsGeometric inequalities https://arxiv.org/abs/2210.05284arxiv:2210.05284Tue, 11 Oct 2022 00:00:00 GMTAdara M. Blaga, Bang-Yen Chen — We provide conditions for a Riemannian manifold with a nontrivial closed affine conformal Killing vector field to be isometric to a Euclidean sphere or to the Euclidean space. Also, we formulate some triviality results for almost Ricci solitons with affine conformal Killing potential vector field.Ricci solitonsAlmost & η-Ricci solitons