skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: Analysis of the Laplacian on the moduli space of poliarzied Calabi-Yau manifolds
In this paper, we generalize the spectrum relation in the paper "On the spectrum of the Laplacian, Math. Ann., 359(1-2):211--238, 2014, by Nelia Charalambous and Zhiqin Lu" to any Hermitian manifolds. We also prove that the closure of the Laplace operator on the moduli space of polarized Calabi-Yau manifolds is self-adjoint.  more » « less
Award ID(s):
1510232
PAR ID:
10191471
Author(s) / Creator(s):
Date Published:
Journal Name:
Contemporary mathematics
Volume:
735
ISSN:
2705-1056
Page Range / eLocation ID:
179-202
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. In this short article, we explore some basic results associated to the Generalized Weyl criterion for the essential spectrum of the Laplacian on Riemannian manifolds. We use the language of Gromov-Hausdorff convergence to recall a spectral gap theorem. Finally, we make the necessary adjustments to extend our main results, and construct a class of complete noncompact manifolds with an arbitrarily large number of gaps in the spectrum of the Hodge Laplacian acting on differential forms. 
    more » « less
  2. In this short article, we explore some basic results associated to the Generalized Weyl criterion for the essential spectrum of the Laplacian on Riemannian manifolds. We use the language of Gromov-Hausdorff convergence to recall a spectral gap theorem. Finally, we make the necessary adjustments to extend our main results, and construct a class of complete noncompact manifolds with an arbitrarily large number of gaps in the spectrum of the Hodge Laplacian acting on differential forms. 
    more » « less
  3. Abstract In this paper, we prove sharp decay estimates of nonnegative generalized subharmonic functions on graphs with positive Laplacian spectrum, which extends the result by Li and Wang (J. Differential Geom. 58 (2001) 501–534) on Riemannian manifolds. 
    more » « less
  4. We look at the action of finite subgroups of [Formula: see text] on [Formula: see text], viewed as a CR manifold, both with the standard CR structure as the unit sphere in [Formula: see text] and with a perturbed CR structure known as the Rossi sphere. We show that quotient manifolds from these actions are indeed CR manifolds, and relate the order of the subgroup of [Formula: see text] to the asymptotic distribution of the Kohn Laplacian’s eigenvalues on the quotient. We show that the order of the subgroup determines whether the quotient of the Rossi sphere by the action of that subgroup is CR embeddable. Finally, in the unperturbed case, we prove that we can determine the size of the subgroup by using the point spectrum. 
    more » « less
  5. The complex Green operator $$\mathcal{G}$$ on CR manifolds is the inverse of the Kohn-Laplacian $$\square_b$$ on the orthogonal complement of its kernel. In this note, we prove Schatten and Sobolev estimates for $$\mathcal{G}$$ on the unit sphere $$\mathbb{S}^{2n-1}\subset \mathbb{C}^n$$. We obtain these estimates by using the spectrum of $$\boxb$$ and the asymptotics of the eigenvalues of the usual Laplace-Beltrami operator. 
    more » « less