Singularly perturbed problems for the nonlinear dliptie systems in a strip domain are considered. Under suitabla conditions, by using the comparison theorem, th
This paper is basically a survey to show a number of combinatorlal optimization problems arising from VLSI clrcult design.Some of them including the existence p
This paper solves an open problem of Vaserstein. The main result is: the equation x^m+y^m=z^m has a solution in SL2z if and only if m is not divisible by 4 or 6
The robust stability for some types of tlme-varying interval raatrices and nonlineartime-varying interval matrices is considered and some sufficient conditions