4.5 Article

Small-signal solutions of a two-dimensional doubly degenerate taxis system modeling bacterial motion in nutrient-poor environments

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DOES SPATIAL HOMOGENEITY ULTIMATELY PREVAIL IN NUTRIENT TAXIS SYSTEMS? A PARADIGM FOR STRUCTURE SUPPORT BY RAPID DIFFUSION DECAY IN AN AUTONOMOUS PARABOLIC FLOW

Michael Winkler

Summary: This work investigates a doubly degenerate cross-diffusion system proposed as a model for complex pattern formation in bacterial populations. It is shown that the system possesses a global weak solution in a bounded real interval with specific properties such as asymptotic stabilization and spatial heterogeneity, which contrast with known features of corresponding systems involving linear nondegenerate diffusion.

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