Research Article

A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence

Number: 51 June 30, 2025
EN

A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence

Abstract

This paper investigates the population dynamics of solutions to a parabolic-parabolic-elliptic type of multi-species Keller-Segel chemotaxis system under the Neumann boundary conditions in a smoothly bounded domain. It studies dynamical properties such as $L^\rho$-bounds, global existence, global boundedness, and combined mass persistence of solutions for the aforementioned system. Under certain specified parameter conditions, the paper shows that the system admits a unique global classical solution that remains uniformly bounded from above. Furthermore, it establishes that the entire population persists at all times; in other words, this study proves that any globally bounded classical solution maintains a positive lower mass bound.

Keywords

Keller-Segel system, chemotaxis, global existence, global boundedness, mass persistence

References

  1. E. F. Keller, L. A. Segel, Initiation of slime mold aggregation viewed as an instability, Journal of Theoretical Biology 26 (1970) 399-415.
  2. E. F. Keller, L. A. Segel, Traveling bans of chemotactic bacteria: A theoretical analysis, Journal of Theoretical Biology 30 (1971) 377-380.
  3. N. Bellomo, A. Bellouquid, Y. Tao, M. Winkler, Toward a mathematical theory of Keller-Segel models of pattern formation in biological tissues, Mathematical Models and Methods in Applied Sciences 25 (09) (2015) 1663-1763.
  4. T. Hillen, K. Painter, A user's guide to PDE models for chemotaxis, Journal of Mathematical Biology 58 (2009) 183-217.
  5. D. Horstmann, From 1970 until present: The Keller-Segel model in chemotaxis, Jahresber Deutsch. Math.-Verein. 106 (2004) 51-69.
  6. M. A. Herrero, E. Medina, J. J. L. Velzquez, Singularity patterns in a chemotaxis model, Mathematische Annalen 306 (1996) 583-623.
  7. M. A. Herrero, J. J. L. Velzquez, Finite-time aggregation into a single point in a reaction-diffusion system, Nonlinearity 10 (6) (1997) 1739-1754.
  8. T. Nagai, Blowup of nonradial solutions to parabolic-elliptic systems modeling chemotaxis in two-dimensional domains, Journal of Inequalities and Applications 6 (2001) 37-55.
  9. T. Nagai, T. Senba, Global existence and blow-up of radial solutions to a parabolic-elliptic system of chemotaxis, Advances in Mathematical Sciences and Applications 8 (1998) 145-156.
  10. J. I. Tello, M. Winkler, A chemotaxis system with logistic source, Common Partial Differential Equations 32 (2007) 849-877.
APA
Kurt, H. İ., & Ekici, M. (2025). A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence. Journal of New Theory, 51, 76-91. https://doi.org/10.53570/jnt.1700338
AMA
1.Kurt Hİ, Ekici M. A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence. JNT. 2025;(51):76-91. doi:10.53570/jnt.1700338
Chicago
Kurt, Halil İbrahim, and Mustafa Ekici. 2025. “A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence”. Journal of New Theory, nos. 51: 76-91. https://doi.org/10.53570/jnt.1700338.
EndNote
Kurt Hİ, Ekici M (June 1, 2025) A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence. Journal of New Theory 51 76–91.
IEEE
[1]H. İ. Kurt and M. Ekici, “A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence”, JNT, no. 51, pp. 76–91, June 2025, doi: 10.53570/jnt.1700338.
ISNAD
Kurt, Halil İbrahim - Ekici, Mustafa. “A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence”. Journal of New Theory. 51 (June 1, 2025): 76-91. https://doi.org/10.53570/jnt.1700338.
JAMA
1.Kurt Hİ, Ekici M. A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence. JNT. 2025;:76–91.
MLA
Kurt, Halil İbrahim, and Mustafa Ekici. “A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence”. Journal of New Theory, no. 51, June 2025, pp. 76-91, doi:10.53570/jnt.1700338.
Vancouver
1.Halil İbrahim Kurt, Mustafa Ekici. A Multi-Species Keller-Segel Chemotaxis-Competition Model: Global Existence, Boundedness, and Mass Persistence. JNT. 2025 Jun. 1;(51):76-91. doi:10.53570/jnt.1700338