2 papers
math.AP2020
A direct approach to nonuniqueness and failure of compactness for the SQG equation
Philip Isett, Andrew Ma
We give an alternative proof of the nonuniqueness of weak solutions to the surface quasigeostrophic equation (SQG) first shown in [Buckmaster-Shkoller-Vicol, '16]. Our approach pro…
math.AP2017
Existence and non-existence of transition fronts in mixed ignition-monostable media
Cole Graham, Tau Shean Lim, Andrew Ma +1
We study transition fronts for one-dimensional reaction-diffusion equations with compactly perturbed ignition-monostable reactions. We establish an almost sharp condition on reacti…