Abstract
We classify left-invariant Einstein-like metrics of neutral signature, over four-dimensional Lie groups. Several geometric properties such as being conformally flat, existing Ricci solitons and Walker structures are exhibited.
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Karami, R., Zaeim, A. & Haji-Badali, A. Ricci solitons and geometry of four dimensional Einstein-like neutral Lie groups. Period Math Hung 78, 58–78 (2019). https://doi.org/10.1007/s10998-018-0262-z
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DOI: https://doi.org/10.1007/s10998-018-0262-z