## 1991: Vol.: 35 Núm.: 2

### Vol.: 35 Núm.: 2

#### Articles

 Continuity of the visibility function PDF A. Forte Cunto 323-332
 Blow up of mechanical systems with a homogeneous energy PDF Ernesto A. Lacomba, J. Bryant, L. A. Ibort 333-345
 Supersolutions and stabilitzation of the solutions of the equation $\frac{\partial u}{\partial t}-\operatorname{div}(|\nabla u|^{p-2}\nabla u)=h(x,u)$, Part II PDF A. El Hachimi, F. de Thelin 347-362
 On universal compositions of maps PDF Zvonko Cerin 363-374
 Exploring W. G. Dwyer's tame homotopy theory PDF H. Scheerer, D. Tanré 375-402
 On Bloch functions and gap series PDF D. Girela 403-427
 Weighted norm inequalities for averaging operators of monotone functions PDF C. J. Neugebauer 429-447
 Weighted $L^p$-boundedness of Fourier series with respect to generalized Jacobi weights PDF José Javier Guadalupe Hernández, M. Pérez, F. J. Ruiz, J. L. Varona 449-459
 Group rings with $FC$-nilpotent unit groups PDF V. Bist 461-463
 Convergence of the averages and finiteness of ergodic power functions in weighted $L^1$ spaces PDF Pedro Ortega Salvador 465-473
 A simple example of a non-commutative Arens product PDF I. Zalduendo 475-477
 A maximum principle for the Bergman space PDF B. Korenblum 479-486
 Bifurcation set and limit cycles forming compound eyes in a perturbed Hamiltonian system PDF J., Liu, Z. Li 487-506
 Interpolating sequences and the Nevanlinna Pick problem PDF A. Stray 507-516
 On the complete digraphs which are simply disconnected PDF D. C. Demaria, J. C. S. Kiihl 517-525
 Applications of the Euler characteristic in bifurcation theory PDF S. Rybicki 527-535
 The formal completion of the Néron model of $J_0(p)$ PDF Enric Nart 537-542
 A classification of braid types for periodic orbits of diffeomorphisms of surfaces of genus one with topological entropy zero PDF J. Guaschi, Jaume Llibre, R. S. Mackay 543-558
 An integral formula on submanifolds of domains of $\Bbb C^n$ PDF T. Hatziafratis 559-569