In this paper,including some partial differential equations with a number ofindependent variables,which can be reduced by the.infinitesimal form of the group,we
Using complex variable methods in elasticity.this paper deals with the plane problemsof a finite dise containing an internal linear crack at any position under
This paper discusses the problem of the extraction of characteristic roots{λ<sub>?</sub>}(λ<sub>0</sub>【λ<sub>1</sub>【λ<sub>2</sub>…)on Bessel-Neumann’s m