# Volume 80, No. 3/4 (2023)

Portugaliae Mathematica

S2O

Articles of this issue are accessible as *open access* under our subscribe to open model.

pp. 207–224 Normal bundle of monomial curves: an application to rational curvesAlberto AlzatiRaquel Mallavibarrena

DOI 10.4171/PM/2104pp. 225–268 Cohomology algebra of orbit spaces of free involutions on the product of projective space and 4-sphereYing SunJianbo Wang

DOI 10.4171/PM/2105pp. 269–289 On the asymptotic behavior of solutions to a class of grand canonical master equationsSabine BögliPierre-A. Vuillermot

DOI 10.4171/PM/2102pp. 291–313 A class of cosmological models with spatially constant sign-changing curvatureMiguel Sánchez Caja

DOI 10.4171/PM/2099pp. 315–326 A note on the real support of Silva–Hasumi–Morimoto ultrahyperfunctionsMagno B. AlvesDaniel H. T. Franco

DOI 10.4171/PM/2091pp. 327–341 On split extensions of preordered groupsMaria Manuel ClementinoCarla Ruivo

DOI 10.4171/PM/2101pp. 343–367 Theoretical analysis of a discrete population balance model with sum kernelSonali KaushikRajesh KumarFernando P. da Costa

DOI 10.4171/PM/2103pp. 369–390 A remark on the logarithmic decay of the damped wave and Schrödinger equations on a compact Riemannian manifoldNicolas BurqIván Moyano

DOI 10.4171/PM/2107pp. 391–400 Some surfaces with canonical map of degree 4Federico FalluccaRoberto Pignatelli

DOI 10.4171/PM/2106pp. 401–405 A reverse Ozawa–Rogers estimateYi C. Huang

DOI 10.4171/PM/2108