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math.DG2019★ 2 cited
Some remarks on equivariant elliptic operators and their invariants
Jochen Brüning, Ken Richardson
In this expository article, we consider first order elliptic differential operators acting on smooth vector bundles over compact manifolds, and certain invariants derived from the…
math.DG2019
New cohomological invariants of foliations
Georges Habib, Ken Richardson
Given a smooth foliation on a closed manifold, basic forms are differential forms that can be expressed locally in terms of the transverse variables. The space of basic forms yield…