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Singular support of the scattering kernel for the acoustic equation in inhomogeneous media

- H. Soga
- Mathematics
- 1984

Majda considere la diffusion par un obstacle et etudie la relation entre le noyau de diffusion et la fonction support. On etudie les problemes correspondant a ceux de Majda pour la diffusion… Expand

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Scattering theory for the elastic wave equation

- Y. Shibata, H. Soga
- Mathematics
- 1 June 1990

In this paper we consider the linear elastic wave equation with the free boundary condition (the Neumann condition), and formulate a scattering theory of the Lax and Phillips type and a… Expand

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Boundary Value Problems with Oblique Derivative

- H. Soga
- Mathematics
- 31 December 1974

where A(x, Dx) is a second-order elliptic differential operator in O, and v is a smooth non-vanishing real vector field on F. When v is nowhere tangent to F, the problem (0.1) is, so-called, of… Expand

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Oscillatory integrals with degenerate stationary points and their application to the scattering theory

- H. Soga
- Mathematics
- 1981

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Conditions against rapid decrease of oscillatory integrals and their applications to inverse scattering problems

- H. Soga
- Mathematics
- 1 June 1986

On considere l'integrale I(σ)=∫ R nexp(−iσφ(x). ρ(x)σ)dx, avec un parametre σ>0, ou φ(x) est une fonction C∞ a valeur reelle et ρ(x;σ) est une fonction C∞ ayant un developpement asymptotique ρ(x;σ)∼ρ… Expand

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Asymptotic solutions of the elastic wave equation and reflected waves near boundaries

- H. Soga
- Mathematics
- 1 September 1990

In the first half of this paper, we construct asymptotic solutions of linear anisotropic elastic equations. In the latter half, we investigate waves reflected by boundaries for plane incident waves… Expand

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Inflammatory Pseudotumor of the Retroperitoneum Removed via a Retroperitoneoscopic Approach

- H. Soga, A. Yao, K. Matsushita, H. Shimogaki, G. Kawabata
- Medicine
- JSLS : Journal of the Society of Laparoendoscopic…
- 1 April 2011

A retroperitoneal laparoscopic approach was found to be useful for treating primary retroperitoneal tumors located below the level of the renal vessels.

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Generalization of the Maxwell equation and relation to the elastic equation

- H. Soga
- Mathematics
- 30 July 2019

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A moment method on inverse problems for the heat equation

- M. Kawashita, Y. Kurylev, H. Soga
- Mathematics
- 2000

In this paper we consider an inverse problem for the heat equation in a bounded domain. The uniqueness and reconstruction are studied in terms of some bilinear form on a product set of harmonic… Expand

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