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Portugaliae mathematica
Tome 45 (1988)
Précédent
Suivant
Sommaire du
Fascicule no. 1
A theorem concerning the multipliers for functions with Fourier transforms in
$L_p$
Larsen, R.
p. 1-4
Alguns teoremas sobre a equivalência do problema do caixeiro viajante múltiplo ao problema do caixeiro viajante
Cerdeira, J. Orestes
;
Coelho, J. Dias
p. 5-12
Anneaux de polynômes sur un anneau de Mori
Ballet, B.
;
Dessagnes, N.
p. 13-24
On the complexity of covering nodes by K node-disjoint cycles
Cerdeira, J. Orestes
p. 25-27
Morphisms in the category
$JTF^\infty $
. Weak classifier of monomorphisms
Coulon, Josette
;
Coulon, Jean-Louis
p. 29-47
Equations of motion of nonlinear nonholonomic systems with variable masses
Ghori, Q.K.
p. 49-58
Correction to
Queiró, João Filipe
p. 59
Coset representatives for permutation groups
Dixon, John D.
;
Majeed, Abdul
p. 61-68
Distribution of a sum of independent positive generalized discrete random variables
Shanmugam, Ramalingam
p. 69-73
On rings whose centers are Galois extensions
Szeto, George
;
Ma, Linjun
p. 75-82
A nested multiplicative commutator equation
Beitia, Maria Asunción
;
Cain, Bryan E.
;
Zaballa, Ion
p. 83-90
A unilateral thermoelastic Stefan-type problem
Rodrigues, José Francisco
p. 91-103
Oscillation properties of fourth order difference equations
Taylor, W.E. jr.
p. 105-114
Sommaire du
Fascicule no. 2
On
$|\overline{N}, p_n|_k$
summability factors of Fourier series
Sulaiman, W.T.
p. 115-124
On a variant of quasi-injectivity via kernel functors
Paramhans, S.A.
p. 125-130
On the absolute
$\varphi $
-summability factors of infinite series
Bor, Hüseyin
p. 131-138
On filial rings
Andrusziewicz, R.
;
Puczylowski, E.R.
p. 139-149
Remarks on commutative noetherian rings whose flat modules have flat injective envelopes
Enochs, Edgar E.
p. 151-156
On a construction of MS-algebras
Katrinák, T.
;
Mikula, K.
p. 157-163
Fibonacci numbers and Diophantine quadruples: generalizations of results of Morgado and Horadam
Shannon, A.G.
p. 165-169
Countable sets of holomorphic mappings
García, Domingo
p. 171-179
Cutpoints, lobes and the spectra of graphs
Grone, Robert
;
Merris, Russell
p. 181-188
On certain structures on the frame bundle of an almost para-contact metric manifold
Bonome, A.
;
Castro, R.
;
Tarrio, A.
p. 189-199
Boundary value representation for a class of Beurling ultradistributions
Pilipovic, Stevan
p. 201-219
A sufficient condition for the well posedness of a Goursat problem
Carvalho e Silva, Jaime
p. 221-228
Sommaire du
Fascicule no. 3
Oscillation and nonoscillation theorems for third order quasi-adjoint difference equations
Smith, B.
p. 229-243
On polynomially semibornological locally convex spaces
Caldas Cueva, Miguel
p. 245-250
On a variant of the Meijer integral transformation
Betancor, J.J.
p. 251-264
On the Dunford-Pettis property
Bombal, Fernando
p. 265-272
Spaces of holomorphic mappings on locally convex spaces
Choi, Yun Sung
p. 273-293
About a family of distributional products important in the applications
Sarrico, C.O.R.
p. 295-316
On the notion of transversal of a sum of matroids
Cordovil, Raúl
;
Dias da Silva, J.A.
;
Fonseca, Amélia
p. 317-325
Sommaire du
Fascicule no. 4
Remarque sur le problème de Cauchy pour une équation de Dirac non linéaire avec masse nulle
Dias, João-Paulo
;
Figueira, Mário
p. 327-335
Parallel projection of matroid spheres
Cordovil, Raúl
;
Guedes de Oliveira, A.
;
Moreira, M. Leonor
p. 337-346
Projections of transnormal twisted spheres
Craveiro de Carvalho, F.J.
p. 347-349
The asymptotic solution of higher-order differential equations with small final coefficient
Eastham, M.S.P.
p. 351-362
A note on equichordal graphs
Craveiro de Carvalho, F.J.
;
Robertson, S.A.
p. 363-368
Varieties of Ockham algebras satisfying
$x\le f^4(x)$
Sequeira, Margarida
p. 369-391
Convex densities and their financial applications
Artikis, Theodore
;
Artikis, George
p. 393-397
Existence of
$A_\infty $
weak homotopy equivalences between spectra for U-bordism with singularities
Magalhães, Luísa
p. 399-410
A note on polynomials versions
Caldas Cueva, Miguel
p. 411-415
Control of a neoclassic economic model
Basto Gonçalves, J.
p. 417-428
On holomorphy in Banach spaces and absolute convergence of Fourier series
Matos, Mário C.
p. 429-450