Abstract
In this paper, we derive curvature estimates for 4-dimensional complete gradient expanding Ricci solitons with nonnegative Ricci curvature (outside a compact set K). More precisely, we prove that the norm of the curvature tensor
Funding source: Simons Foundation
Award Identifier / Grant number: 586694 HC
Funding statement: Research of Huai-Dong Cao was partially supported by a Simons Foundation Collaboration Grant (No. #586694 HC).
Acknowledgements
We would like to thank Pak-Yeung Chan, Chih-Wei Chen, Alix Deruelle, Ovidiu Munteanu, Jiaping Wang, Junming Xie and Detang Zhou for their interests and their helpful comments on an earlier version of the paper. We also thank the referee for carefully reading our paper and providing helpful suggestions.
References
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