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On initial value problem for elliptic equation on the plane under Caputo derivative

Binh Research Article Tran Thanh, Thang Bui Dinh, Phuong Nguyen Duc

Demonstratio Mathematica

2023

Vol. 56, nr 1

art. no. 20220257

In this article, we are interested to study the elliptic equation under the Caputo derivative. We obtain several regularity results for the mild solution based on various assumptions of the input data. In addition, we derive the lower bound of the mild solution in the appropriate space. The main tool of the analysis estimation for the mild solution is based on the bound of the Mittag-Leffler functions, combined with analysis in Hilbert scales space. Moreover, we provide a regularized solution for our problem using the Fourier truncation method. We also obtain the error estimate between the regularized solution and the mild solution. Our current article seems to be the first study to deal with elliptic equations with Caputo derivatives on the unbounded domain.