Ⅰ. INTRODUCTIONCauchy’s problems and mixed problems of hyperbolic equations of the second order and the higher order were studied previously. Some papers, such as [3] and [4], were devoted to the study on the Dirich...Ⅰ. INTRODUCTIONCauchy’s problems and mixed problems of hyperbolic equations of the second order and the higher order were studied previously. Some papers, such as [3] and [4], were devoted to the study on the Dirichlet problem of the hyperbolic equation of the second order. There still remain some questions: Might any boundary value problem for the hyperbolic equation of the higher order be posed? What difference would appear between them?展开更多
文摘Ⅰ. INTRODUCTIONCauchy’s problems and mixed problems of hyperbolic equations of the second order and the higher order were studied previously. Some papers, such as [3] and [4], were devoted to the study on the Dirichlet problem of the hyperbolic equation of the second order. There still remain some questions: Might any boundary value problem for the hyperbolic equation of the higher order be posed? What difference would appear between them?
