1991 / 39 / 3-4 (1) - DOI: 10.5486/PMD.1991.39.3-4.01 - p. 185-197 Hideo Izumi and Mamoru Yoshida: On the geometry of generalized metric spaces. II. Spaces of isotropic curvature Full text paper (pdf)
1991 / 39 / 3-4 (2) - DOI: 10.5486/PMD.1991.39.3-4.02 - p. 199-217 M. K. Prisco: On the classification of nilpotent Lie algebras of maximal rank Full text paper (pdf)
1991 / 39 / 3-4 (3) - DOI: 10.5486/PMD.1991.39.3-4.03 - p. 219-235 Józef Tabor: Cauchy and Jensen equations on a restricted domain almost everywhere Full text paper (pdf)
1991 / 39 / 3-4 (4) - DOI: 10.5486/PMD.1991.39.3-4.04 - p. 237-242 Czesław Konopka: On extrinsic spheres in Kähler manifolds Full text paper (pdf)
1991 / 39 / 3-4 (5) - DOI: 10.5486/PMD.1991.39.3-4.05 - p. 243-251 Petre Stavre and Francisc C. Klepp: Finsler connection transformations associated to a general Finsler metrical structure of Miron type. II. Full text paper (pdf)
1991 / 39 / 3-4 (6) - DOI: 10.5486/PMD.1991.39.3-4.06 - p. 253-261 Magdolna Várterész: Equation solving iterations based on tangential convex functions Full text paper (pdf)
1991 / 39 / 3-4 (7) - DOI: 10.5486/PMD.1991.39.3-4.07 - p. 263-282 Magdalen Sz. Kirkovits: On $k$-Lagrange geometry Full text paper (pdf)
1991 / 39 / 3-4 (8) - DOI: 10.5486/PMD.1991.39.3-4.08 - p. 283-293 Danuta Stachowiak: Notes on topological properties of $\phi (L)$ spaces (abstract) Full text paper (pdf)
1991 / 39 / 3-4 (9) - DOI: 10.5486/PMD.1991.39.3-4.09 - p. 295-297 Michal Zajac: On a fixed point theorem of Greguš, Jr. (abstract) Full text paper (pdf)
1991 / 39 / 3-4 (10) - DOI: 10.5486/PMD.1991.39.3-4.10 - p. 299-304 C. Alsina and J. L. Garcia Roig: On a functional equation characterizing inner product spaces Full text paper (pdf)
1991 / 39 / 3-4 (11) - DOI: 10.5486/PMD.1991.39.3-4.11 - p. 305-313 B. Kovács and Gy. Maksa: Interval-filling sequences of order $N$ and a representation of real numbers in canonical number systems Full text paper (pdf)
1991 / 39 / 3-4 (12) - DOI: 10.5486/PMD.1991.39.3-4.12 - p. 315-323 Zbigniew Olszak and Radu Roşca: Normal locally conformal almost cosymplectic manifolds Full text paper (pdf)
1991 / 39 / 3-4 (13) - DOI: 10.5486/PMD.1991.39.3-4.13 - p. 325-338 Marek Kuczma: On a Stamate-type functional equation Full text paper (pdf)
1991 / 39 / 3-4 (14) - DOI: 10.5486/PMD.1991.39.3-4.14 - p. 339-345 S. Szabó: Estimate of the rate of mean convergence of Hermite interpolating processes Full text paper (pdf)
1991 / 39 / 3-4 (15) - DOI: 10.5486/PMD.1991.39.3-4.15 - p. 347-351 I. Joó: On ball-filling vector sequences in $\mathbf{R}^N$ Full text paper (pdf)
1991 / 39 / 3-4 (16) - DOI: 10.5486/PMD.1991.39.3-4.16 - p. 353-358 I. Z. Ruzsa and R. Tijdeman: On the difference of integer-valued additive functions Full text paper (pdf)