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Rigid Properties of Generalized $$\tau $$-Quasi Ricci-Harmonic Metrics
Results in Mathematics ( IF 1.1 ) Pub Date : 2020-10-13 , DOI: 10.1007/s00025-020-01299-w
Fanqi Zeng

In this paper, we study compact generalized $$\tau $$ -quasi Ricci-harmonic metrics. In the first part, we explore conditions under which generalized $$\tau $$ -quasi Ricci-harmonic metrics are harmonic-Einstein and give some characterization results for this case. In the second part, we obtain some rigidity results for compact $$(\tau , \rho )$$ -quasi Ricci-harmonic metrics which are a special case of generalized $$\tau $$ -quasi Ricci-harmonic metrics. In the third part, we give two gap theorems for compact $$\tau $$ -quasi Ricci-harmonic metrics by showing some necessary and sufficient conditions for the metrics to be harmonic-Einstein.

中文翻译:

广义 $$\tau $$-准 Ricci-Harmonic 度量的刚性属性

在本文中,我们研究了紧凑的广义 $$\tau $$ -quasi Ricci-harmonic 度量。在第一部分,我们探讨了广义 $$\tau $$ -quasi Ricci-harmonic 度量是谐波爱因斯坦的条件,并给出了这种情况下的一些表征结果。在第二部分,我们获得了紧凑 $$(\tau , \rho )$$ -quasi Ricci-harmonic 度量的一些刚性结果,这是广义 $$\tau $$ -quasi Ricci-harmonic 度量的一个特例。在第三部分中,我们给出了紧凑的 $$\tau $$ -quasi Ricci-harmonic 度量的两个间隙定理,通过展示度量是谐波爱因斯坦的一些必要和充分条件。
更新日期:2020-10-13
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