On integrated semigroups and age structured models in {$L^p$} spaces

By Pierre Magal, Shigui Ruan. Differential and Integral Equations, 2007

101 citations recorded by the source corpus.

In this paper, we first develop some techniques and results for integrated semigroups when the generator is not a Hille-Yosida opera- tor and is non-densely defined. Then we establish a theorem of Da Prato and Sinestrari's type for the nonhomogeneous Cauchy problem and prove a perturbation theorem. In particular, we obtain necessary and suffi- cient conditions for the existence of mild solutions for non-densely de- fined non-homogeneous Cauchy problems. Next we extend the results to L p spaces and consider the semilinear and non-autonomous prob- lems. Finally we apply the results to studying age-structured models with dynamic boundary conditions in L p spaces. We also demonstrate that neutral delay differential equations in L p can be treated as special cases of the age-structured models in an L p space.

Subfields: Applied Mathematics, Computational Theory and Mathematics, Control and Systems Engineering

View Paper: https://www.semanticscholar.org/paper/d4aa48ce785ddab3b2101171b5bcbf762c6288e0

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In Applied Mathematics

  1. Shigui Ruan
  2. Pierre Magal
  3. Arnaud Ducrot
  4. Zhihua Liu
  5. Horst R. Thieme
  6. Wan-Tong Li

In Computational Theory and Mathematics

  1. Pierre Magal
  2. Shigui Ruan
  3. Arnaud Ducrot
  4. Zhihua Liu
  5. Horst R. Thieme

In Control and Systems Engineering

  1. Pierre Magal
  2. Shigui Ruan
  3. Arnaud Ducrot
  4. Zhihua Liu
  5. Horst R. Thieme

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