Abstract
We extend holomorphically polyharmonic functions on a real ball to a complex set being the union of rotated balls. We solve a Dirichlet type problem for complex polyharmonic functions with the boundary condition given on the union of rotated spheres.
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Grzebuła, H., Michalik, S. A Dirichlet type problem for complex polyharmonic functions. Acta Math. Hungar. 153, 216–229 (2017). https://doi.org/10.1007/s10474-017-0740-4
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DOI: https://doi.org/10.1007/s10474-017-0740-4