JournalspmVol. 64, No. 1

Volume 64, No. 1 (2007)

Portugaliae Mathematica

Port. Math. cover

pp. 3–10
Notes on periodic solutions of discrete steady state systems
Gen-Qiang WangSui Sun Cheng
DOI 10.4171/PM/1772
pp. 11–19
Spectra in Banach and locally convex algebras
A. K. Gaur
DOI 10.4171/PM/1773
pp. 21–38
Perfect polynomials over $F_{4}$ with less than five prime factors
Luis H. GallardoOlivier Rahavandrainy
DOI 10.4171/PM/1774
pp. 39–65
Local energy decay for the nonlinear dissipative wave equation in an exterior domain
Moez Daoulatli
DOI 10.4171/PM/1775
pp. 67–74
Totally umbilical semi-invariant submanifolds of a nearly trans-Sasakian manifold
V. A. KhanM. A. KhanS. Uddin
DOI 10.4171/PM/1776
pp. 75–85
Positive integers divisible by the product of their nonzero digits
Jean-Marie De KoninckFlorian Luca
DOI 10.4171/PM/1777
pp. 87–126
On the Cauchy problem for a one-dimensional compressible viscous polytropic ideal gas
Yuming QinYumei WuFagui Liu
DOI 10.4171/PM/1778