Abstract
We study a parabolic free boundary problem with a fixed gradient condition which serves as a simplified model for the propagation of premixed equidiffusional flames. We give a rigorous justification of an example due to J.L. Vázquez that the initial data in the form of two circular humps leads to the nonuniqueness of limit solutions if the supports of the humps touch at the time of their maximal expansion.
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Communicated by Steven Krantz.
A. Petrosyan was supported in part by NSF grant DMS-0701015.
N.K. Yip was supported in part by NSF grant DMS-0406033.
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Petrosyan, A., Yip, N.K. Nonuniqueness in a Free Boundary Problem from Combustion. J Geom Anal 18, 1098–1126 (2008). https://doi.org/10.1007/s12220-008-9044-9
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DOI: https://doi.org/10.1007/s12220-008-9044-9