Browsing NTNU Open by Author "Grong, Erlend"
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A Lichnerowicz estimate for the spectral gap of a sub-Laplacian
Berge, Stine Marie; Grong, Erlend (Journal article; Peer reviewed, 2019)Abstract: For a second order operator on a compact manifold satisfying the strong Hörmander condition, we give a bound for the spectral gap analogous to the Lichnerowicz estimate for the Laplacian of a Riemannian manifold. ...