Portugaliae Mathematica

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Volume 66, Issue 1, 2009

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Existence and uniqueness of periodic solutions for a delay differential equation with piecewise constant arguments
Haihua Liang and Gen-Qiang Wang
pp. 1–12
Abstract | Full-Text PDF (86 KB) | Metadata

Existence of solutions for a third-order boundary value problem with p-Laplacian operator and nonlinear boundary conditions
De-Xiang Ma and Shu-Zhen Sun
pp. 13–27
Abstract | Full-Text PDF (114 KB) | Metadata

Existence of a renormalized solution for a class of nonlinear parabolic equations in Orlicz spaces
Elhoussine Azroul, Hicham Redwane and Mohamed Rhoudaf
pp. 29–63
Abstract | Full-Text PDF (221 KB) | Metadata

A class of integral domains whose integral closures are small submodules of the quotient field
David E. Dobbs
pp. 65–70
Abstract | Full-Text PDF (60 KB) | Metadata

Stability criteria for certain third order nonlinear delay differential equations
Cemil Tunç
pp. 71–80
Abstract | Full-Text PDF (84 KB) | Metadata

The counting hierarchy in binary notation
Gilda Ferreira
pp. 81–94
Abstract | Full-Text PDF (135 KB) | Metadata

Multilinear functionals of Schatten class type and approximation numbers
Cristiane de Andrade Mendes
pp. 95–105
Abstract | Full-Text PDF (94 KB) | Metadata

An existence theorem for a perturbed singular elliptic problem
Giovanni Anello
pp. 107–114
Abstract | Full-Text PDF (77 KB) | Metadata

On simple Filippov superalgebras of type B(0, n), II
Alexander P. Pojidaev and Paulo Saraiva
pp. 115–130
Abstract | Full-Text PDF (145 KB) | Metadata