## 1997: Vol.: 41 Núm.: 2

### Vol.: 41 Núm.: 2

#### Articles

 $L^2$-boundedness of a singular integral operator PDF D. Fan, Yibiao Pan 317-333
 Integrability of a linear center perturbed by a fifth degree homogeneous polynomial PDF J. Chavarriga, J. Giné 335-356
 Foliations in algebraic surfaces having a rational first integral PDF A. García Zamora 357-373
 Continuum-wise expansive diffeomorphisms PDF K. Sakai 375-382
 On $Sp(2)$ and $Sp(2)\cdot Sp(1)$-structures in 8-dimensional vector bundles PDF M. Cadek, J. Vanzura 383-401
 Harmonic functions operating in Hermitian Banach PDF A. El Kinani 403-409
 Simple groups contain minimal simple groups PDF M. J. J. Barry, M. B. Ward 411-415
 Functions of class $C^k$ without derivatives PDF G. M. Tuynman 417-435
 $G$-structures of second order defined by linear operators satisfying algebraic relations PDF D. Demetropoulou-Psomopoulou 437-453
 Molecules and linearly ordered ideals of $MV$-algebras PDF C. S. Hoo 455-465
 Structure of spaces of germs of holomorphic functions PDF N. Van Khue, P. Thien Danh 467-480
 $P$-nilpotent completion is not idempotent PDF G. C. Tan 481-487
 Alexander ideals of classical knots PDF C. Kearton, S. M. J. Wilson 489-494
 On finite abelian groups realizable as Mislin genera PDF Peter Hilton, D. Scevenels 495-505
 Nonlocal problems for quasilinear functional partial differential equations of first order PDF J. Turo 507-517
 The Voronovskaya theorem for some linear positive operators in exponential weight spaces PDF L. Rempulska, M. Skorupka 519-526
 Some remarks on indices of holomorphic vector fields PDF M. Brunella 527-544
 Caractérisation des anneaux noethériens de séries formelles à croissance controlée. Application à la synthèse spectrale PDF J. Chaumat, A.-M. Chollet 545-561
 LS-catégorie de CW-complexes à 3 cellules en théorie homotopique $R$-locale PDF H. Scheerer, D. Tanré 563-576
 Norm inequalities for the minimal and maximal operator, and differentiation of the integral PDF D. Cruz-Uribe, SFO, C. J. Neugebauer, V. Olesen 577-604
 The multiplicative structure of $K(n)^*(BA_4)$ PDF M. Brunetti 605-612
 Consequences of the meromorphic equivalence of standard matrix differential equations PDF H. J. Zwiesler 613-630
 Padua and Pisa are exponentially far apart PDF B. M. M. de Weger 631-651
 There is no analog of the transpose map for infinite matrices PDF J. J. Simón Pinero 653-657
 The closed convex hull of the interpolating Blaschke products PDF K. Øyma 659-669