activity
20242026
collaborators

8 papers

math.NA2026

Proxy-surface-based fast direct solver for TE-mode scattering problems on distributed memory systems

Yasuhiro Matsumoto, Rio Yokota

This paper describes an MPI/OpenMP hybrid parallelized fast direct solver for the scattering problem of transverse electric (TE)-mode electromagnetic waves. Because TE-mode scatter…

math.AP2026

Well-posedness of the weakly singular Burton-Miller equation for Helmholtz transmission problems

Yasuhiro Matsumoto

Although various boundary integral formulations are available for the Helmholtz transmission problem, the weakly singular Burton-Miller (BM) equation is promising because it is wel…

math.NA2026

An accelerated direct solver for scalar wave scattering by multiple transmissive inclusions in two dimensions

Yasuhiro Matsumoto

This paper discusses a fast direct solver using boundary integral equations for Helmholtz transmission problems involving multiple inclusions in two dimensions. Efficiently address…

math.NA2026

A fast direct solver for two-dimensional transmission problems of elastic waves

Yasuhiro Matsumoto, Taizo Maruyama

This paper describes a fast direct boundary element method for elastodynamic transmission problems in two dimensions, which can be used for analyzing elastic wave scattering by an…

math.NA2025

Efficient LU factorization exploiting direct-indirect Burton-Miller equation for Helmholtz transmission problems

Yasuhiro Matsumoto, Kei Matsushima

This paper proposes a direct-indirect mixed Burton-Miller boundary integral equation for solving Helmholtz scattering problems with transmissive scatterers. The proposed formulatio…

math.AP2025

Injectivity of boundary integral operator in direct-indirect mixed Burton-Miller equation for wave scattering problems with transmissive circular inclusion

Yasuhiro Matsumoto, Kei Matsushima

This study proves that the injectivity condition for the integral operator of the direct-indirect mixed Burton-Miller (BM) boundary integral equation (BIE) for Helmholtz transmissi…