TY - JOUR AU - D, Hilhorst AU - Kersner, Róbert AU - E, Logak AU - M, Mimura TI - Interface dynamics of the Fisher equation with degenerate diffusion JF - ELECTRONIC JOURNAL OF DIFFERENTIAL EQUATIONS J2 - ELECTR J DIFFER EQUAT VL - 244 PY - 2008 IS - 11 SP - 2870 EP - 2889 PG - 20 SN - 1072-6691 UR - https://m2.mtmt.hu/api/publication/1755719 ID - 1755719 LA - English DB - MTMT ER - TY - JOUR AU - Hilhorst, D AU - Kersner, Róbert AU - Logak, E AU - Mimura, M TI - Interface dynamics of the Fisher equation with degenerate diffusion JF - JOURNAL OF DIFFERENTIAL EQUATIONS J2 - J DIFFER EQUATIONS VL - 244 PY - 2008 IS - 11 SP - 2870 EP - 2889 PG - 20 SN - 0022-0396 DO - 10.1016/j.jde.2008.02.018 UR - https://m2.mtmt.hu/api/publication/1788513 ID - 1788513 AB - We consider a degenerate parabolic reaction-diffusion equation with a monostable nonlinearity arising in population dynamics. In some suitable scaling limit, we prove the generation and propagation of an interface with constant normal velocity in the case that the initial condition has a convex compact support. © 2008 Elsevier Inc. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Gilding, B H AU - Kersner, Róbert TI - A fisher/KPP-type equation with density-dependent diffusion and convection: Travelling-wave solutions JF - JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL J2 - J PHYS A-MATH GEN VL - 38 PY - 2005 IS - 15 SP - 3367 EP - 3379 PG - 13 SN - 0305-4470 DO - 10.1088/0305-4470/38/15/009 UR - https://m2.mtmt.hu/api/publication/1756234 ID - 1756234 AB - This paper concerns processes described by a nonlinear partial differential equation that is an extension of the Fisher and KPP equations including density-dependent diffusion and nonlinear convection. The set of wave speeds forwhich the equation admits a wavefront connecting its stable and unstable equilibrium states is characterized. There is a minimal wave speed. For this wave speed there is a unique wavefront which can be found explicitly. It displays a sharp propagation front. For all greater wave speeds there is a unique wavefront which does not possess this property. For such waves, the asymptotic behaviour as the equilibrium states are approached is determined. © 2005 IOP Publishing Ltd. LA - English DB - MTMT ER - TY - JOUR AU - Biró, Zsolt Péter TI - Stability of travelling waves for degenerate reaction-diffusion equations of KPP-type JF - ADVANCED NONLINEAR STUDIES J2 - ADV NONLINEAR STUD VL - 2 PY - 2002 IS - 4 SP - 357 EP - 371 PG - 15 SN - 1536-1365 UR - https://m2.mtmt.hu/api/publication/163288 ID - 163288 LA - English DB - MTMT ER -