Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Maschler Gideon"'
Autor:
Aazami Amir Babak, Maschler Gideon
Publikováno v:
Complex Manifolds, Vol 7, Iss 1, Pp 36-61 (2019)
Given a semi-Riemannian 4-manifold (M, g) with two distinguished vector fields satisfying properties determined by their shear, twist and various Lie bracket relations, a family of Kähler metrics gK is constructed, defined on an open set in M, which
Externí odkaz:
https://doaj.org/article/42169163a00e455f87d68247a1a0a98f
Autor:
Jeffres, Thalia, Maschler, Gideon
A K\"ahler metric is called central if the determinant of its Ricci endomorphism is constant. For the case in which this constant is zero, we study on $4$-manifolds the existence of complete metrics of this type which are cohomogeneity one for three
Externí odkaz:
http://arxiv.org/abs/2107.14683
Autor:
Maschler, Gideon, Ream, Robert
We show that integrability of an almost complex structure in complex dimension $m$ is equivalent, in the presence of an almost hermitian metric, to $m(m-1)$ equations involving what we call shear operators. Inspired by this, we give an ansatz for K\"
Externí odkaz:
http://arxiv.org/abs/2010.09218
Autor:
Maschler, Gideon, Ream, Robert
We prove the existence of complete cohomogeneity one triaxial K\"ahler-Einstein metrics in dimension four under an action of the Euclidean group $E(2)$. We also demonstrate local existence of Ricci flat K\"ahler metrics of a related type that are giv
Externí odkaz:
http://arxiv.org/abs/2007.06471
Autor:
Aazami, Amir Babak, Maschler, Gideon
Publikováno v:
Ann. Global Anal. Geom. 57 (2020), no. 1, 175-204
Conditions for the existence of K\"ahler-Einstein metrics and central K\"ahler metrics [MS] along with examples, both old and new, are given on classes of Lorentzian $4$-manifolds with two distinguished vector fields. The results utilize the general
Externí odkaz:
http://arxiv.org/abs/1811.08999
We study the existence of weighted extremal K\"ahler metrics in the sense of Apostolov-Calderbank-Gauduchon-Legendre and Lahdili on the total space of an admissible projective bundle over a Hodge K\"ahler manifold of constant scalar curvature. Admiss
Externí odkaz:
http://arxiv.org/abs/1808.02813
Autor:
Aazami, Amir Babak, Maschler, Gideon
Publikováno v:
Complex Manifolds 7 (2020), no. 1, 36-61
Given a semi-Riemannian $4$-manifold $(M,g)$ with two distinguished vector fields satisfying properties determined by their shear, twist and various Lie bracket relations, a family of K\"ahler metrics $g_K$ is constructed, defined on an open set in $
Externí odkaz:
http://arxiv.org/abs/1711.10011
Autor:
Braverman, Maxim, Maschler, Gideon
We consider a generalized APS boundary problem for a G-invariant Dirac-type operator, which is not of product type near the boundary. We establish a delocalized version (a so-called Kirillov formula) of the equivariant index theorem for this operator
Externí odkaz:
http://arxiv.org/abs/1702.08105
Autor:
Apostolov, Vestislav, Maschler, Gideon
On a given compact complex manifold or orbifold $(M,J)$, we study the existence of Hermitian metrics $\tilde g$ in the conformal classes of K\"ahler metrics on $(M,J)$, such that the Ricci tensor of $\tilde g$ is of type $(1,1)$ with respect to the c
Externí odkaz:
http://arxiv.org/abs/1512.06391
Autor:
Maschler, Gideon
Publikováno v:
Pacific J. Math. 286 (2017) 361-384
We investigate K\"ahler metrics conformal to gradient Ricci solitons, and base metrics of warped product gradient Ricci solitons. The latter we name quasi-solitons. A main assumption that is employed is functional dependence of the soliton potential,
Externí odkaz:
http://arxiv.org/abs/1504.08351