On some spectral problems arising in dynamic populations

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November 2012, 11(6): 2429-2443. doi: 10.3934/cpaa.2012.11.2429

On some spectral problems arising in dynamic populations

Antoine Henrot ^1, , El-Haj Laamri ^2, and Didier Schmitt ^2,

1.	Institut Elie Cartan, Nancy Université - CNRS, B.P. 239, 54 506 Vandoeuvre-les-Nancy, France
2.	Institut Elie Cartan, Nancy Université - CNRS, B.P. 239, 54 506 Vandoeuvre-lès-Nancy, France, France

Received February 2011 Revised February 2011 Published April 2012

Abstract
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We study a spectral problem related to a reaction-diffusion model where preys and predators do not live on the same area. We are interested in the optimal zone where a control should take place. First, we prove existence of an optimal domain in a natural class. Then, it seems plausible that the optimal domain is localized in the intersection of the living areas of the two species. We prove this fact in one dimension for small sized domains.

Keywords: optimal location, predator-prey, Spectral problem.

Mathematics Subject Classification: Primary: 49J20; Secondary: 35P15, 92D25.

Citation: Antoine Henrot, El-Haj Laamri, Didier Schmitt. On some spectral problems arising in dynamic populations. Communications on Pure & Applied Analysis, 2012, 11 (6) : 2429-2443. doi: 10.3934/cpaa.2012.11.2429

References:

[1]	S. Anita, W. E. Fitzgibbon and M. Langlais, Global existence and internal stabilization for a reaction-diffusion systems posed on non coincident spatial domains,, Discrete Contin. Dyn. Syst. Ser. B, 11 (2009), 805. doi: 10.3934/dcdsb.2009.11.805. Google Scholar
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[4]	A. Ducrot, V. Guyonne and M. Langlais, Some Remarks on the qualitative properties of solutions to a predator-prey model posed on non coincident spatial domains,, Discrete Contin. Dyn. Syst., 4 (2011), 67. doi: 10.3934/dcdss.2011.4.67. Google Scholar
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[7]	A. Henrot, "Extremum Problems for Eigenvalues of Elliptic Operators,", Frontiers in Mathematics, (2006). doi: 10.1007/3-7643-7706-2. Google Scholar
[8]	A. Henrot and M. Pierre, "Variation et optimisation de formes,", Math\'ematiques et Applications, 48 (2005). doi: 10.1007/3-540-37689-5. Google Scholar
[9]	T. Kato, "Perturbation Theory for Linear Operators,", \textbf{132}, 132 (1966). doi: 10.1007/978-3-642-66282-9. Google Scholar
[10]	M. Langlais, Some mathematical reaction-diffusion problems arising in population dynamics and posed on non coincident spatial domains,, Workshop, (2009), 22. Google Scholar

show all references

References:

[1]	S. Anita, W. E. Fitzgibbon and M. Langlais, Global existence and internal stabilization for a reaction-diffusion systems posed on non coincident spatial domains,, Discrete Contin. Dyn. Syst. Ser. B, 11 (2009), 805. doi: 10.3934/dcdsb.2009.11.805. Google Scholar
[2]	H. Brézis, "Analyse Fonctionnelle,", Masson, (1983). Google Scholar
[3]	G. Degla, An overview of semi-continuity results on the spectral radius and positivity,, J. Math. Anal. Appl., 338 (2008), 101. doi: 10.1016/j.jmaa.2007.05.011. Google Scholar
[4]	A. Ducrot, V. Guyonne and M. Langlais, Some Remarks on the qualitative properties of solutions to a predator-prey model posed on non coincident spatial domains,, Discrete Contin. Dyn. Syst., 4 (2011), 67. doi: 10.3934/dcdss.2011.4.67. Google Scholar
[5]	H. Egnell, Extremal properties of the first eigenvalue of a class of elliptic eigenvalue problems,, Ann. Scuola Norm. Sup. Pisa Cl. Sci. (4), 14 (1987), 1. Google Scholar
[6]	W. E. Fitzgibbon and M. Langlais, Simple models for the transmission of microparasites between host populations living on noncoincident spatial domains,, In, 1936 (2008), 115. doi: 10.1007/978-3-540-78273-5_3. Google Scholar
[7]	A. Henrot, "Extremum Problems for Eigenvalues of Elliptic Operators,", Frontiers in Mathematics, (2006). doi: 10.1007/3-7643-7706-2. Google Scholar
[8]	A. Henrot and M. Pierre, "Variation et optimisation de formes,", Math\'ematiques et Applications, 48 (2005). doi: 10.1007/3-540-37689-5. Google Scholar
[9]	T. Kato, "Perturbation Theory for Linear Operators,", \textbf{132}, 132 (1966). doi: 10.1007/978-3-642-66282-9. Google Scholar
[10]	M. Langlais, Some mathematical reaction-diffusion problems arising in population dynamics and posed on non coincident spatial domains,, Workshop, (2009), 22. Google Scholar

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