与三维广义sasaki空间形式相关的不同孤子

IF 0.9 Q2 MATHEMATICS Afrika Matematika Pub Date : 2025-01-03 DOI:10.1007/s13370-024-01233-1
Arpan Sardar, Avijit Sarkar
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引用次数: 0

摘要

在本文中,我们描述了包含爱因斯坦孤子、\(\eta \) -爱因斯坦孤子、\(\eta \) -Ricci孤子、\(\eta \) -Ricci孤子、梯度 -Ricci孤子和\(\eta \) -Yamabe孤子的三维广义sasaki空间形式。首先,我们证明了三维广义sasaki空间形式\(M(f_1,f_2,f_3)\)上的爱因斯坦孤子成为Ricci孤子,并且该孤子分别按照\((f_1 - f_3) < 0, = 0\)和\(> 0\)收缩、稳定和膨胀,其中\(f_1\)、\(f_2\)和\(f_3\)是光滑函数。同时,我们建立了如果一个三维广义sasaki空间形式\(M(f_1,f_2,f_3)\)允许一个梯度\(\eta \) -Ricci孤子,其势函数为f,则\(f = log(\frac{f_1-f_3}{k})^2,\),其中k为常数。其次,我们证明了如果一个三维广义sasaki -空间形式\(M(f_1,f_2,f_3)\)是一个\(\eta \) -Yamabe孤子,那么该孤子就退化为一个Yamabe孤子,并且标量曲率是常数。最后,我们构造了一个例子来证明结果的存在性。
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Different solitons associated with 3-dimensional generalized Sasakian-space-forms

In the present paper we characterize 3-dimensional generalized Sasakian-space-forms admitting some solitons such as Einstein solitons, \(\eta \)-Einstein solitons,\(\eta \)-Ricci solitons, gradient \(\eta \)-Ricci solitons and \(\eta \)-Yamabe solitons. First we show that an Einstein soliton on a 3-dimensional generalized Sasakian-space-form \(M(f_1,f_2,f_3)\) becomes a Ricci soliton and the soliton is shrinking, steady and expanding according as \((f_1 - f_3) < 0, = 0\) and \(> 0\), respectively, where \(f_1\), \(f_2\) and \(f_3\) are smooth functions. Also, we establish that if a 3-dimensional generalized Sasakian-space-form \(M(f_1,f_2,f_3)\) admits a gradient \(\eta \)-Ricci soliton with potential function f, then \(f = log(\frac{f_1-f_3}{k})^2,\) where k is a constant. Next, we prove that if a 3-dimensional generalized Sasakian-space-form \(M(f_1,f_2,f_3)\) is an \(\eta \)-Yamabe soliton, then the soliton reduces to a Yamabe soliton and the scalar curvature is constant. Finally, we construct an example which proves the existence of our results.

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来源期刊
Afrika Matematika
Afrika Matematika MATHEMATICS-
CiteScore
2.00
自引率
9.10%
发文量
96
期刊最新文献
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