JournalspmVol. 66, No. 4

Volume 66, No. 4 (2009)

Portugaliae Mathematica

Port. Math. cover

pp. 413–426
Series of reciprocal products with factors from linear recurrence sequences
Peter Bundschuh
DOI 10.4171/PM/1851
pp. 427–512
The geometry of 2-calibrated manifolds
David Martínez Torres
DOI 10.4171/PM/1852
pp. 513–533
An oscillation criterion for linear difference equations with general delay argument
G. E. ChatzarakisCh. G. PhilosI. P. Stavroulakis
DOI 10.4171/PM/1853
pp. 535–541
The best constant for an almost critical Sobolev imbedding
Alain Haraux
DOI 10.4171/PM/1854