This analysis establishes jump relations and continuity of layer potentials in boundary integral equations, implying critical insights for time-dependent domains.
This paper investigates the boundary behaviour of layer potentials for the multi-term time-fractional diffusion equation (MTFDE) across the moving boundary. First, we establish the jump relation for the double-layer potential associated with the fundamental solution of the inhomogeneous MTFDE. Second, we prove the continuity of the double-layer potential generated by the kernel corresponding to the homogeneous MTFDE. Krasnoschok obtained similar results for the time-fractional diffusion equation. However, in the multi-term case, the fundamental solution has more complex structure and does not admit standard scaling properties, which requires a different approach. Our results are essential for the analysis of boundary integral equations related to the MTFDE in time-dependent domains.
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Krzysztof Pawlak (2025) studied this question.
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