Volume 11 (1) (1991)

• M.T. Calapso
  Quasi Sasakian manifolds endowed with a 1-conformal cosymplectic structure
  1-13
• O. Ferri, G. Tallini
  Una caratterizzazione delle quadriche non singolari di PG(4,9)
  15-21
• L. Berardi, F. Eugeni
  Smart Cards and Authentication Schemes
  23-29
• P. De Vito, P.M. Lo Re
  Sugli spazi lineari con n2+n+1 punti e n2+3n rette
  31-38
• G. Pesamosca
  On the Analytic Solution of the 3-Point Weber Problem
  39-45
• M.K. Aouf
  On a New Criterion for Univalent Functions of Order Alpha
  47-59
• M. Chipot, G. Vergara Caffarelli
  A Remark on G-Convergence for Nonsymmetric Operators
  61-66
• M.M. Peloso
  Central Critical Points in the Spectrum of the Fourier-Stieltjes Algebra of a Locally Compact Group
  67-84
• P. Filipponi
  On the 3n+1 Problem: Something Old, Something New
  85-103
• A.M. Pastore, F. Verrocca
  Some Results on the Homogeneous Riemannian Structures of Class T1⊕ T1.
  105-121
• M. Obradovich, S. Owa
  The Ruscheweyh's Derivative and some Criteria for Univalence in the Unit Disc
  123-132
• L. Guerra
  Sugli Ideali Principali dell'Anello delle Coordinate di una Varietà Proiettiva e la Proprietà S2
  133-156
• J.J. Benedetto, C. Karanikas
  Support Dependent Fourier Transform Norm Inequalities
  157-174
• E. De Pascale, G. Trombetta
  Fixed Points and Best Approximations for Convexly Condensing Functions in Topological Vector Spaces
  175-186
• D. Pasquali Coluzzi
  On Some Configurations of Points in a Finite Affine Space AG(n,q)
  187-198
• F. Lerda
  Intelligenza Artificiale, Matematica e Fisica: Hic Rhodus, Hic Salta
  199-207