The Novikov-Bott inequalities

Details The Novikov-Bott inequalities The Novikov-Bott inequalities

1995-08-16

arxiv.org/abs/dg-ga/9508009v1

Mathematics

Differential Geometry

6 pages; AMS-LaTeX. We give a short review of the results of dg-ga/9508006. We also present an L^2 generalization of these res

Scientific paper

We generalize the Novikov inequalities for 1-forms in two different directions: first, we allow non-isolated critical points (assuming that they are non-degenerate in the sense of R.Bott), and, secondly, we strengthen the inequalities by means of twisting by an arbitrary flat bundle. We also obtain an $L^2$ version of these inequalities with finite von Neumann algebras. The proof of the main theorem uses Bismut's modification of the Witten deformation of the de Rham complex; it is based on an explicit estimate on the lower part of the spectrum of the corresponding Laplacian.

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