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Analysis of chemotactic migration in liquid environments / Tobias Black. Paderborn, 2019
Content
Introduction
Original publications
Sublinear signal production in a two-dimensional Keller–Segel–Stokes system
Introduction
Local existence of classical solutions
Regularity of u implied by regularity of n
Global existence and boundedness in two-dimensional domains
Obtaining a first information on the gradient of c
Further testing procedures
Global existence and boundedness
Global solvability of chemotaxis fluid systems with nonlinear diffusion and matrix-valued sensitivities in three dimensions
Introduction
The notions of weak and very weak solutions
A family of regularized problems
Global existence of approximating solutions and basic properties
A priori estimates
Estimates capturing optimal conditions on m and alpha
Estimates involving the fluid component
Time regularity
Limit functions and their regularity properties
Solution properties of the limit functions
Weak solution properties of c and u
Weak solution property of n for m+2alpha>5/3
Very weak solution property of n in the case of m+alpha>4/3
Eventual smoothness of generalized solutions to a singular chemotaxis-Stokes system in 2D
Introduction
Basic properties of a family of generalized problems
Regularity of the Stokes subsystem
Logarithmic rescaling and basic a priori information on z
Generalized solution concept and approximate solutions
Eventual smoothness of small-data generalized solutions
Nonincreasing energy for small mass
Conditional regularity estimates
Conditional estimates for the L4-norm of gradient z and the L2-norm of n
Eventual smoothness for generalized solutions with small mass
Stabilization of solutions with small energy
Global classical solutions for small initial data
The Stokes limit in a three-dimensional chemotaxis-Navier–Stokes system
Introduction
Preliminaries. Weak solutions and a priori information for a family of approximating systems
Existence of a limit solution family when epsilon to zero
Eventual smallness of oxygen concentration with waiting times independent of eps and kappa
Eventual Lp regularity estimates independent of eps and kappa as consequence of small oxygen concentration
Uniform eventual stabilization of nepkap and uepkap in some Lp spaces
Uniform eventual smoothness estimates
Uniform exponential decay after the smoothing time
The second limit. Taking kappa to zero
Bibliography
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