Publicationes Mathematicae Banner

1991

1991/38/1-2 (1) — DOI: 10.5486/PMD.1991.38.1-2.01 — pp. 1-4
Béla Barna (1909–1990)

B. Gyires

1991/38/1-2 (2) — DOI: 10.5486/PMD.1991.38.1-2.02 — pp. 5-12
Perfect polynomials revisited

J. T. B. Beard

1991/38/1-2 (3) — DOI: 10.5486/PMD.1991.38.1-2.03 — pp. 13-17
Une méthode de construction de plans en blocs de chaînettes

Francis Maurin

1991/38/1-2 (4) — DOI: 10.5486/PMD.1991.38.1-2.04 — pp. 19-31
Reflections of Riemannian manifolds

L. Verhóczki

1991/38/1-2 (5) — DOI: 10.5486/PMD.1991.38.1-2.05 — pp. 33-38
A note on constructing $E$-rings

Jutta Hausen and Johnny A. Johnson

1991/38/1-2 (6) — DOI: 10.5486/PMD.1991.38.1-2.06 — pp. 39-48
Direct arithmetics of relational systems

Josef Šlapal

1991/38/1-2 (7) — DOI: 10.5486/PMD.1991.38.1-2.07 — pp. 49-68
Distributions of finite order in the operational calculus

Hubert Wysocki

1991/38/1-2 (8) — DOI: 10.5486/PMD.1991.38.1-2.08 — pp. 69-76
Central automorphisms of standard wreath products

John Panagopoulos

1991/38/1-2 (9) — DOI: 10.5486/PMD.1991.38.1-2.09 — pp. 77-82
A left translation preserving a Finsler connection invariant

Makoto Matsumoto

1991/38/1-2 (10) — DOI: 10.5486/PMD.1991.38.1-2.10 — pp. 83-91
Generating functions of some products of arithmetical functions

P. J. McCarthy

1991/38/1-2 (11) — DOI: 10.5486/PMD.1991.38.1-2.11 — pp. 93-101
Non-convex perturbations of evolution equations with $m$-dissipative operators in Banach spaces

E. P. Avgerinos and N. S. Papageorgiou

1991/38/1-2 (12) — DOI: 10.5486/PMD.1991.38.1-2.12 — pp. 103-109
Invariant submanifolds of a trans-Sasakian manifold

D. Chinea and P. S. Perestelo

1991/38/1-2 (13) — DOI: 10.5486/PMD.1991.38.1-2.13 — pp. 111-119
Partially ordered sets with self-complementary comparability graphs

Gerhard Behrendt

1991/38/1-2 (14) — DOI: 10.5486/PMD.1991.38.1-2.14 — pp. 121-143
Splitting theorems for nonassociative rings

K. I. Beĭdar and R. Wiegandt

1991/38/1-2 (15) — DOI: 10.5486/PMD.1991.38.1-2.15 — pp. 145-163
Lower bounds for $P(x^3+k)$, an elementary approach

J. Buchmann, K. Győry, M. Mignotte and N. Tzanakis

1991/38/1-2 (16) — DOI: 10.5486/PMD.1991.38.1-2.16 — pp. 165-173
A note on stationarity of bilinear models

Gy. Terdik and M. Ispány

1991/38/1-2 (17) — DOI: 10.5486/PMD.1991.38.1-2.SUPP — pp. S1-S38
Report on the Third International Symposium on Functional Equations and Inequalities (September 21–27, 1986, Noszvaj, Hungary)

Gyula Maksa (compiled by)

1991/38/3-4 (1) — DOI: 10.5486/PMD.1991.38.3-4.01 — pp. 175-183
On the solutions of the functional equation $f(xf(y)^l+yf(x)^k)=tf(x)f(y)$

Janusz Brzdęk

1991/38/3-4 (2) — DOI: 10.5486/PMD.1991.38.3-4.02 — pp. 185-188
On arithmetical functions over Gaussian integers having constant values in some domain

Mahmoud Amer

1991/38/3-4 (3) — DOI: 10.5486/PMD.1991.38.3-4.03 — pp. 189-214
Torsion and curvature in smooth loops

K. H. Hofmann and Karl Strambach

1991/38/3-4 (4) — DOI: 10.5486/PMD.1991.38.3-4.04 — pp. 215-223
On the approximate realizability of certain spaces of transfer functions

Carmen E. Vera

1991/38/3-4 (5) — DOI: 10.5486/PMD.1991.38.3-4.05 — pp. 225-229
Skew pure projective abelian groups

S. Janakiraman

1991/38/3-4 (6) — DOI: 10.5486/PMD.1991.38.3-4.06 — pp. 231-235
Bounding functions concerning character degrees of solvable groups

Erzsébet Horváth

1991/38/3-4 (7) — DOI: 10.5486/PMD.1991.38.3-4.07 — pp. 237-243
Another version of a common fixed point theorem

Roy O. Davies

1991/38/3-4 (8) — DOI: 10.5486/PMD.1991.38.3-4.08 — pp. 245-246
Summing power series with exponential polynomial coefficients

László Székelyhidi

1991/38/3-4 (9) — DOI: 10.5486/PMD.1991.38.3-4.09 — pp. 247-253
On speed of mean convergence of Lagrange and Hermite interpolation based on the roots of Laguerre polynomials

K. Balázs and I. Joó

1991/38/3-4 (10) — DOI: 10.5486/PMD.1991.38.3-4.10 — pp. 255-262
Additive functions on the Gaussian integers

Marijke van Rossum-Wijsmuller

1991/38/3-4 (11) — DOI: 10.5486/PMD.1991.38.3-4.11 — pp. 263-271
On anti-invariant submanifolds in Sasakian manifolds with vanishing contact Bochner curvature tensor

Hiroshi Endo

1991/38/3-4 (12) — DOI: 10.5486/PMD.1991.38.3-4.12 — pp. 273-277
A note on radical and radical free topological groups

G. Rangan

1991/38/3-4 (13) — DOI: 10.5486/PMD.1991.38.3-4.13 — pp. 279-285
Linear extensions of partial orders preserving antimonotonicity

Zsolt Lengvárszky

1991/38/3-4 (14) — DOI: 10.5486/PMD.1991.38.3-4.14 — pp. 287-295
On Faber expansions

I. N. Bruj and I. Joó

1991/38/3-4 (15) — DOI: 10.5486/PMD.1991.38.3-4.15 — pp. 297-309
Extensions and ideals of rings

Stefan Veldsman

1991/38/3-4 (16) — DOI: 10.5486/PMD.1991.38.3-4.16 — pp. 311-322
Continuous orthogonality spaces

György Szabó

1991/38/3-4 (17) — DOI: 10.5486/PMD.1991.38.3-4.17 — pp. 323-332
New characterizations of the arithmetic-geometric mean of Gauss and other well-known mean values

Hiroshi Haruki

1991/39/1-2 (1) — DOI: 10.5486/PMD.1991.39.1-2.01 — pp. 1-4
Counterexamples to a conjecture about the sum of degrees of irreducible characters

Yakov Berkovich

1991/39/1-2 (2) — DOI: 10.5486/PMD.1991.39.1-2.02 — pp. 5-17
Quasilinear system of equations with quadratic growth in unbounded domains

Kumud Singh

1991/39/1-2 (3) — DOI: 10.5486/PMD.1991.39.1-2.03 — pp. 19-86
Lattice minima and units in real quadratic number fields

Daniel C. Mayer

1991/39/1-2 (4) — DOI: 10.5486/PMD.1991.39.1-2.04 — pp. 87-89
On an arithmetical property of $\sqrt 2$

I. Joó and M. Joó

1991/39/1-2 (5) — DOI: 10.5486/PMD.1991.39.1-2.05 — pp. 91-93
Steinhaus theorem in summability for $P$-adic fields

V. K. Srinivasan

1991/39/1-2 (6) — DOI: 10.5486/PMD.1991.39.1-2.06 — pp. 95-105
$f(3,1)$-Finsler structures and their integrability

Gheorghe Atanasiu

1991/39/1-2 (7) — DOI: 10.5486/PMD.1991.39.1-2.07 — pp. 107-111
Nonlinear connection in cotangent bundle

Gh. Atanasiu and F. C. Klepp

1991/39/1-2 (8) — DOI: 10.5486/PMD.1991.39.1-2.08 — pp. 113-134
On the geometry of generalized metric spaces. I. Connections and identities

Hideo Izumi

1991/39/1-2 (9) — DOI: 10.5486/PMD.1991.39.1-2.09 — pp. 135-141
Infinite Latin squares containing nested sets of mutually orthogonal finite Latin squares

J. V. Brawley and Gary L. Mullen

1991/39/1-2 (10) — DOI: 10.5486/PMD.1991.39.1-2.10 — pp. 143-147
A note on topological spaces

Mansoor Ahmad

1991/39/1-2 (11) — DOI: 10.5486/PMD.1991.39.1-2.11 — pp. 149-153
Multiplicative functions satisfying a congruence property. III.

Bui Minh Phong

1991/39/1-2 (12) — DOI: 10.5486/PMD.1991.39.1-2.12 — pp. 155-157
On a method of Galambos and Kátai concerning the frequency of deficient numbers

J. Sándor

1991/39/1-2 (13) — DOI: 10.5486/PMD.1991.39.1-2.13 — pp. 159-162
On a special superelliptic equation

B. Brindza

1991/39/1-2 (14) — DOI: 10.5486/PMD.1991.39.1-2.14 — pp. 163-169
Complexity investigations on decomposable form equations

Attila Pethő

1991/39/1-2 (15) — DOI: 10.5486/PMD.1991.39.1-2.15 — pp. 171-179
On second order linear divisibility sequences over algebraic number fields

K. Győry and A. Pethő

1991/39/3-4 (1) — DOI: 10.5486/PMD.1991.39.3-4.01 — pp. 185-197
On the geometry of generalized metric spaces. II. Spaces of isotropic curvature

Hideo Izumi and Mamoru Yoshida

1991/39/3-4 (2) — DOI: 10.5486/PMD.1991.39.3-4.02 — pp. 199-217
On the classification of nilpotent Lie algebras of maximal rank

M. K. Prisco

1991/39/3-4 (3) — DOI: 10.5486/PMD.1991.39.3-4.03 — pp. 219-235
Cauchy and Jensen equations on a restricted domain almost everywhere

Józef Tabor

1991/39/3-4 (4) — DOI: 10.5486/PMD.1991.39.3-4.04 — pp. 237-242
On extrinsic spheres in Kähler manifolds

Czesław Konopka

1991/39/3-4 (5) — DOI: 10.5486/PMD.1991.39.3-4.05 — pp. 243-251
Finsler connection transformations associated to a general Finsler metrical structure of Miron type. II.

Petre Stavre and Francisc C. Klepp

1991/39/3-4 (6) — DOI: 10.5486/PMD.1991.39.3-4.06 — pp. 253-261
Equation solving iterations based on tangential convex functions

Magdolna Várterész

1991/39/3-4 (7) — DOI: 10.5486/PMD.1991.39.3-4.07 — pp. 263-282
On $k$-Lagrange geometry

Magdalen Sz. Kirkovits

1991/39/3-4 (10) — DOI: 10.5486/PMD.1991.39.3-4.10 — pp. 299-304
On a functional equation characterizing inner product spaces

C. Alsina and J. L. Garcia Roig

1991/39/3-4 (11) — DOI: 10.5486/PMD.1991.39.3-4.11 — pp. 305-313
Interval-filling sequences of order $N$ and a representation of real numbers in canonical number systems

B. Kovács and Gy. Maksa

1991/39/3-4 (12) — DOI: 10.5486/PMD.1991.39.3-4.12 — pp. 315-323
Normal locally conformal almost cosymplectic manifolds

Zbigniew Olszak and Radu Roşca

1991/39/3-4 (13) — DOI: 10.5486/PMD.1991.39.3-4.13 — pp. 325-338
On a Stamate-type functional equation

Marek Kuczma

1991/39/3-4 (14) — DOI: 10.5486/PMD.1991.39.3-4.14 — pp. 339-345
Estimate of the rate of mean convergence of Hermite interpolating processes

S. Szabó

1991/39/3-4 (15) — DOI: 10.5486/PMD.1991.39.3-4.15 — pp. 347-351
On ball-filling vector sequences in $\mathbf{R}^N$

I. Joó

1991/39/3-4 (16) — DOI: 10.5486/PMD.1991.39.3-4.16 — pp. 353-358
On the difference of integer-valued additive functions

I. Z. Ruzsa and R. Tijdeman