Bang-Yen Chen

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Chen Bang-yen
陳邦彦
Born	(1943-10-03) October 3, 1943 (age 81) Toucheng, Yilan, Taiwan
Nationality	Taiwanese, American
Alma mater	Tamkang University (BS) National Tsing Hua University (MS) University of Notre Dame (PhD)
Known for	"Chen inequalities", "Chen invariants (or δ-invariants)", "Chen's conjectures", "Chen surface", "Chen–Ricci inequality", "Chen submanifold", "Chen equality", "Submanifolds of finite type", "Slant submanifolds", "ideal immersion", "(M+,M-)-theory for compact symmetric spaces & 2-numbers of Riemannian manifolds (joint with Tadashi Nagano)".
Scientific career
Fields	Differential geometry, Riemannian Geometry, Geometry and topology
Institutions	Michigan State University
Thesis	On the G-total curvature and topology of immersed manifolds  (1970)
Doctoral advisor	Tadashi Nagano
Doctoral students	Bogdan Suceavă
Website	www.researchgate.net/profile/Bang_Yen_Chen

Chen Bang-yen is a Taiwanese-American mathematician who works mainly on differential geometry and related subjects. He was a University Distinguished Professor of Michigan State University from 1990 to 2012. After 2012 he became University Distinguished professor emeritus.