Volume 64, No. 1 (2007)
Portugaliae Mathematica

pp. 3–10 Notes on periodic solutions of discrete steady state systemsGen-Qiang WangSui Sun Cheng
pp. 11–19 Spectra in Banach and locally convex algebrasA. K. Gaur
pp. 21–38 Perfect polynomials over with less than five prime factorsLuis H. GallardoOlivier Rahavandrainy
pp. 39–65 Local energy decay for the nonlinear dissipative wave equation in an exterior domainMoez Daoulatli
pp. 67–74 Totally umbilical semi-invariant submanifolds of a nearly trans-Sasakian manifoldV. A. KhanM. A. KhanS. Uddin
pp. 75–85 Positive integers divisible by the product of their nonzero digitsJean-Marie De KoninckFlorian Luca
pp. 87–126 On the Cauchy problem for a one-dimensional compressible viscous polytropic ideal gasYuming QinYumei WuFagui Liu