Abstract
We consider the parabolic-parabolic Keller–Segel system with singular sensitivity and logistic source: \( u_t=\Delta u-\chi \nabla \cdot (\frac{u}{v}\nabla v) +ru-\mu u^2\), \(v_t=\Delta v-v+u\) under the homogeneous Neumann boundary conditions in a smooth bounded domain \(\Omega \subset \mathbb {R}^2\), \(\chi ,\mu >0\) and \(r\in \mathbb {R}\). It is proved that the system exists globally bounded classical solutions if \(r>\frac{\chi ^2}{4}\) for \(0<\chi \le 2\), or \(r>\chi -1\) for \(\chi >2\).
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Supported by the National Natural Science Foundation of China (11171048).
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Zhao, X., Zheng, S. Global boundedness to a chemotaxis system with singular sensitivity and logistic source. Z. Angew. Math. Phys. 68, 2 (2017). https://doi.org/10.1007/s00033-016-0749-5
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DOI: https://doi.org/10.1007/s00033-016-0749-5