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This tag is used if a reference is needed in a paper or textbook on a specific result.

4 votes
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Bochner formula in different forms

Here's a reference to a paper; Theorem 3 gives a general formula for differential forms with no constraints on the boundary values. I'm not sure if this shows up in a book yet. Raulot, S.; Savo, A. …
Jeffrey Case's user avatar
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6 votes
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Spectral theory of infinite volume hyperbolic manifolds

In dimension $n$, there are at most finitely many eigenvalues in $[ 0, (n-1)^2/4 )$ and that the continuous spectrum is $[ (n-1)^2/4 , \infty )$ with no embedded eigenvalues. The following survey art …
Jeffrey Case's user avatar
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5 votes
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Hodge decomposition for non-elliptic complexes

This is false. Equip $T^2 = S^1 \times S^1$ with the Lorentzian metric $g = -ds^2 + dt^2$. For concreteness, regard $S^1 = \mathbb{R} / \mathbb{Z}$. Consider the de Rham complex. The Hodge Laplaci …
Jeffrey Case's user avatar
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