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Yau conjectured that a Fano manifold admits a Kahler-Einstein metric if and only if it is stable in the sense of geometric invariant theory. There has been much progress on this conjecture by Tian, Donaldson and others. The Mabuchi energy…

Differential Geometry · Mathematics 2009-01-12 Jian Song , Ben Weinkove

The limiting behavior of the normalized K\"ahler-Ricci flow for manifolds with positive first Chern class is examined under certain stability conditions. First, it is shown that if the Mabuchi K-energy is bounded from below, then the scalar…

Differential Geometry · Mathematics 2018-12-20 D. H. Phong , Jian Song , Jacob Sturm , Ben Weinkove

Consider a polarized complex manifold (X,L) and a ray of positive metrics on L defined by a positive metric on a test configuration for (X,L). For most of the common functionals in K\"ahler geometry, we prove that the slope at infinity…

Differential Geometry · Mathematics 2020-05-21 Sébastien Boucksom , Tomoyuki Hisamoto , Mattias Jonsson

We show that a compact weighted extremal Kahler manifold (as defined by the third named author) has coercive weighted Mabuchi energy with respect to a maximal complex torus in the reduced group of complex automorphisms. This provides a vast…

Differential Geometry · Mathematics 2023-11-22 Vestislav Apostolov , Simon Jubert , Abdellah Lahdili

We obtain a structure theorem for the group of holomorphic automorphisms of a conformally K\"ahler, Einstein-Maxwell metric, extending the classical results of Matsushima, Licherowicz and Calabi in the K\"ahler-Einstein, cscK, and extremal…

Differential Geometry · Mathematics 2017-10-10 Abdellah Lahdili

If $M$ is a projective manifold in $P^N$, then one can associate to each one parameter subgroup $H$ of $SL(N+1)$ the Mumford $\mu$ invariant. The manifold $M$ is Chow-Mumford stable if $\mu$ is positive for all $H$. Tian has defined the…

Differential Geometry · Mathematics 2007-05-23 D. H. Phong , Jacob Sturm

This article is an expository introduction to our paper Convexity of the K-energy and Uniqueness of Extremal metrics. We present the main ideas behind the proof that Mabuchi's K-energy functional is convex along weak geodesics in the space…

Differential Geometry · Mathematics 2025-11-06 Robert J. Berman , Bo Berndtsson

Let $X$ be a canonically polarized variety, i.e. a complex projective variety such that its canonical class $K_{X}$ defines an ample $\Q-$line bundle, and satisfying the conditions $G_1$ and $S_2$. Our main result says that $X$ admits a…

Complex Variables · Mathematics 2016-05-10 Robert J. Berman , Henri Guenancia

We establish the convexity of Mabuchi's K-energy functional along weak geodesics in the space of Kahler potentials on a compact Kahler manifold thus confirming a conjecture of Chen and give some applications in Kahler geometry, including a…

Differential Geometry · Mathematics 2015-01-27 Robert J. Berman , Bo Berndtsson

K\"ahler-Einstein currents, also known as singular K\"ahler-Einstein metrics, have been introduced and constructed a little over a decade ago. These currents live on mildly singular compact K\"ahler spaces $X$ and their two defining…

Complex Variables · Mathematics 2023-06-01 Vincent Guedj , Henri Guenancia , Ahmed Zeriahi

We show that the Mabuchi energy of any polarized manifold (X,L) is (bounded below) proper on the full space of Kahler metrics in the first Chern class of L if and only if (X,L) is asymptotically (semi)stable. In particular it now follows…

Differential Geometry · Mathematics 2021-05-05 Sean Timothy Paul

We run the continuity method for Mabuchi's generalization of K\"{a}hler-Einstein metrics, assuming the existence of an extremal K\"{a}hler metric. It gives an analytic proof (without minimal model program) of the recent existence result…

Differential Geometry · Mathematics 2025-05-20 Tomoyuki Hisamoto , Satoshi Nakamura

In this paper we extend recent breakthrough of Chen-Cheng \cite{CC1, CC2, CC3} on existence of constant scalar K\"ahler metric on a compact K\"ahler manifold to Calabi's extremal metric. Our argument follows \cite{CC3} and there are no new…

Differential Geometry · Mathematics 2018-01-24 Weiyong He

We introduce a notion of a K\"ahler metric with constant weighted scalar curvature on a compact K\"ahler manifold $X$, depending on a fixed real torus $\mathbb{T}$ in the reduced group of automorphisms of $X$, and two smooth (weight)…

Differential Geometry · Mathematics 2020-01-15 Abdellah Lahdili

We prove the uniqueness, up to a pull-back by an element of a suitable subgroup of complex automorphisms, of the weighted extremal K\"ahler metrics on a compact K\"ahler manifold introduced in our previous work. This extends a result by…

Differential Geometry · Mathematics 2020-07-06 Abdellah Lahdili

We prove the lower semi-continuity of the coercivity threshold of Mabuchi functional along a degenerate family of normal compact K\"ahler varieties with klt singularities. Moreover, we establish the existence of singular cscK metrics on…

Complex Variables · Mathematics 2025-06-19 Chung-Ming Pan , Tat Dat Tô , Antonio Trusiani

We introduce different Finsler metrics on the space of smooth K\"ahler potentials that will induce a natural geometry on various finite energy classes $\mathcal E_{\tilde \chi}(X,\omega)$. Motivated by questions raised by R. Berman, V.…

Differential Geometry · Mathematics 2017-12-15 Tamás Darvas

Donaldson conjectured \cite{Dona96} that the space of K\"ahler metrics is geodesic convex by smooth geodesic and that it is a metric space. Following Donaldson's program, we verify the second part of Donaldson's conjecture completely and…

Differential Geometry · Mathematics 2009-09-25 Xiuxiong Chen

We calculate Chow quotients of some families of symmetric \(T\)-varieties. In complexity two we obtain new examples of K\"ahler-Einstein metrics by bounding the symmetric alpha invariant of their orbifold quotients. As an additional…

Algebraic Geometry · Mathematics 2019-12-20 Jacob Cable

We introduce a class of almost homogeneous varieties contained in the class of spherical varieties and containing horospherical varieties as well as complete symmetric varieties. We develop K{\"a}hler geometry on these varieties, with…

Differential Geometry · Mathematics 2020-09-16 Thibaut Delcroix
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