Deformations of secondary characteristic classes

Some Cohomology Classes in Principal Fiber Bundles and Their Application to Riemannian Geometry

Shiing-Shen Chern, James Simons · Proceedings of the National Academy of Sciences · 1971 · 151 citations · Full text

Natural Sciences, Mathematics, Physics +17

Noncobordant foliations of 𝑆³

William P. Thurston · Bulletin of the American Mathematical Society · 1972 · 86 citations · Full text

Natural Sciences, Mathematics, Topology +4

$G$-structures of order two and transgression operators

Shôshichi Kobayashi, Takushiro Ochiai · Journal of Differential Geometry · 1971 · 13 citations · Full text

Natural Sciences, Physics, Differential Equations +15