As application of the result obtained,a prior bound on solutions to the general linear inhomogenerous differential system is derived,which is incomparable with the well-known results of Wazewski and But.

In this paper,we first give a priori estimates of solutions of irregular oblique derivative boundary value prob-lem for second order nonlinear elliptic equations(problem M),then on the basis of estimates of solutions of prob-lem M and method of parameter extension,we prove that problem M is solvable.

In this paper,using the topological transversality theorem and a priori bounds,we study a type of third order boundary value problems, and existence theorems are obtained.

Mu Mu-tian s proposition of "pure poetry",which was extended on the basis of the western philosophical conception "transcendental world",serves as a pioneer of the early symbolist poetry theory in China.