Abstract
We study the sign of the solution of a linear parabolic biharmonic Cauchy problem in $\mathbb R^n$ by varying both the source and the initial datum. Eventual local positivity is proved under different assumptions and the problem of global positivity is discussed.
Citation
Elvise Berchio. "On the sign of solutions to some linear parabolic biharmonic equations." Adv. Differential Equations 13 (9-10) 959 - 976, 2008. https://doi.org/10.57262/ade/1355867326
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