Unconditional uniqueness and non-uniqueness for Hardy-H\'enon parabolic equations

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Abstract: We study the problems of uniqueness for Hardy-H'enon parabolic equations, which are semilinear heat equations with the singular potential (Hardy type) or the increasing potential (H'enon type) in the nonlinear term. To deal with the Hardy-H'enon type nonlinearities, we employ weighted Lorentz spaces as solution spaces. We prove unconditional uniqueness and non-uniqueness, and we establish uniqueness criterion for Hardy-H'enon parabolic equations in the weighted Lorentz spaces. The results extend the previous works on the Fujita equation and Hardy equations in Lebesgue spaces.

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