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7 results for HCF

In this paper we study a version of the Hermitian curvature flow (HCF). We focus on complex homogeneous manifolds equipped with induced metrics. We prove that this finite-dimensional space of metrics is invariant under the HCF and write down the corresponding ODE on the space of Hermitian forms on the underlying Lie al…

2017-06-21abs ↗pdf ↗

The purpose of this paper is to prove that the Hermitian Curvature Flow (HCF) on an Hermitian manifold (M,g,J)(M,g,J) preserves many natural curvature positivity conditions. Following Wilking, for an AdGL(T1,0M)Ad\,{GL(T^{1,0}M)}-invariant subset SEnd(T1,0M)S\subset End(T^{1,0}M) and a ncie function F ⁣:End(T1,0M)RF\colon End(T^{1,0}M)\to\mathbb R we con…

2017-10-17abs ↗pdf ↗

Study on Hermitian manifolds with curvature, finding geometric properties.

problem Understanding the structure of Hermitian manifolds with semipositive Griffiths curvature.
method Combining HCF, torsion-twisted connection properties, and geometric observations.
result Null spaces of the Chern-Ricci form generate a holomorphic, integrable distribution.

We investigate the Hermitian curvature flow (HCF) of left-invariant metrics on complex unimodular Lie groups. We show that in this setting the flow is governed by the Ricci-flow type equation tgt=Ric1,1(gt)\partial_tg_{t}=-{\rm Ric}^{1,1} (g_t). The solution gtg_t always exist for all positive times, and (1+t)1gt(1 + t)^{-1}g_t converge…

2018-06-29abs ↗pdf ↗

Study Bismut-Griffiths-positivity in non-Kähler manifolds under Hermitian curvature flows.

problem Investigate positivity of Bismut curvature in non-Kähler manifolds.
method Analyze Bismut-Griffiths-positivity under Hermitian curvature flows.
result Identify HCFs that do not preserve Bismut-Griffiths-positivity.

Study expanding solitons on complex Lie groups with specific algebraic structures.

problem Investigate expanding solitons on complex Lie groups with left-invariant metrics.
method Analyze the algebraic structure of complex Lie groups and their decompositions.
result Show that the Lie algebras of complex Lie groups decompose into semidirect products.