Positive Intermediate Ricci Curvature on Fibre Bundles

被引:0
|
作者
Reiser, Philipp [1 ]
Wraith, David J. [2 ]
机构
[1] Univ Fribourg, Dept Math, Fribourg, Switzerland
[2] Natl Univ Ireland Maynooth, Dept Math & Stat, Maynooth, County Kildare, Ireland
关键词
positive intermediate Ricci curvature; fibre bundle; plumbing; homotopy sphere; moduli space; EXOTIC SPHERES; FOCAL RADIUS; MANIFOLDS; METRICS;
D O I
10.3842/SIGMA.2025.006
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We prove a canonical variation-type result for submersion metrics with positive intermediate Ricci curvatures. This can then be used in conjunction with surgery techniques to establish the existence of metrics with positive intermediate Ricci curvatures on a wide range of examples which had previously only been known to admit positive Ricci curvature, such as highly connected manifolds and exotic spheres. Further, we extend results of the second author on the moduli space of metrics with positive Ricci curvature to positive intermediate Ricci curvatures.
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页数:17
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