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Pure Mathematics 2026
两类Ricci二次闵可夫斯基积芬斯勒流形
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Abstract:
设(M1,F1)和(M2,F2)是两个芬斯勒流形,闵可夫斯基积芬斯勒流形(M,F)是赋予了芬斯勒度量F=√f(S,T)的乘积流形M= M1× M2,其中S= F12,T=F22,f是积函数.本文主要研究闵可夫斯基积芬斯勒流形的 Ricci 二次曲率,证明了闵可夫斯基积芬斯勒流形(M,F)是 Ricci二次流形当且仅当(M1,F1)和(M2,F2)都是 Ricci 二次流形;闵可夫斯基积芬斯勒流形(M,F)是强Ricci二次流形当且仅当(M1,F1)和(M2,F2)都是强 Ricci二次流形。
Let (M1,F1) and (M2,F2) be two Finsler manifolds. The Minkowskian product Finsler manifold (M,F) is the product manifold M= M1× M2 endowed with the Finsler metric
F=√f(S,T), where S= F12,T=F22, and f denotes a product function. This paper mainly investigates the Ricci quadratic curvature of Minkowskian product Finsler
manifolds, and proves the following results: The Minkowskian product Finsler man-
ifold (M,F) is a Ricci quadratic manifold if and only if both (M1,F1) and (M2,F2) are Ricci quadratic manifolds; The Minkowskian product Finsler manifold (M,F) is a strongly Ricci quadratic manifold if and only if both (M1,F1) and (M2,F2) are strongly Ricci quadratic manifolds.
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