Volume 70, No. 1 (2013)
Portugaliae Mathematica
pp. 1–10 Outerplanarity without accumulation in the cylinder and the Möbius BandLuis BozaEugenio M. FedrianiJuan Núñez
DOI 10.4171/PM/1922pp. 11–22 Another approach on an elliptic equation of Kirchhoff typeAnderson L.A. de Araujo
DOI 10.4171/PM/1923pp. 23–50 Convergence of a finite difference method for the KdV and modified KdV equations with dataPaulo AmorimMário Figueira
DOI 10.4171/PM/1924pp. 51–58 When every principal ideal is flatFatima CheniourNajib Mahdou
DOI 10.4171/PM/1925pp. 59–91 Tropical Severi varietiesJihyeon Jessie Yang
DOI 10.4171/PM/1926