Volume 78, No. 1 (2021)
Portugaliae Mathematica
pp. 1–41 Courant-sharp property for Dirichlet eigenfunctions on the Möbius stripPierre BérardBernard HelfferRola Kiwan
pp. 43–63 Stability conditions for reversible and partially integrable systemsClaudio A. BuzziLuci Any F. RobertoMarco A. Teixeira
pp. 65–99 The cost of approximate controllability of heat equation with general dynamical boundary conditionsIdriss BoutaayamouSalah-Eddine ChorfiLahcen ManiarOmar Oukdach
pp. 101–128 On the asymptotic behavior of high order moments for a family of Schrödinger equationsNikolay TzvetkovNicola Visciglia