HOUSTON JOURNAL OF
MATHEMATICS

Archived Edition Vol. 21, No. 4, 1995

Editors: H. Brezis (Paris), S.S. Chern (Berkeley), J. Damon (Chapel Hill), L.C. Evans (Berkeley), R.M. Hardt (Rice), J.A. Johnson (Houston), A. Lelek (Houston), J. Nagata (Osaka), B.H. Neumann (Australian National University), V. Paulsen (Houston), G. Pisier (College Station and Paris), R. Scott (Houston), S.W. Semmes (Rice), K. Uhlenbeck (Austin)
Managing Editor: G. Auchmuty (Houston)

Houston Journal of Mathematics


Contents

M. Sunil, R. Koswatta
The Word Problem for Certain Two Generator Subgroups of the Group of Order-Automorphismsof the Real Line, pp. 629-658.

Laura McKinney, John Meier, Katharine Schnare
Abelian Quotients of Artin Groups, pp. 659-670.

Dae San Kim
On the Finiteness of Certain Double Coset Spaces, pp. 671-684.

K. D. Magill, Jr., P. R. Misra
Partially Ordered Families of Laminated Semigroups and Laminated Near-Rings, pp. 685-708.

Philippe Rukimbira
Chern-Hamilton's Conjecture and K-Contactness, pp. 709-718.

Wing Suet Li, Carl Pearcy
On Polynomially Bounded Operators. II, pp. 719-733.

Radu Teodorescu
Spectral Stability on Closed Similarity Orbits, pp. 735-738.

B. Mond, J. E. Pecaric
On Jensen's Inequality for Operator Convex Functions, pp. 739-754.

Hideo Kozono, Masao Yamazaki
Local and Global Unique Solvability of the Navier-Stokes Exterior ProblemWith Cauchy Data in the Space Ln,infty, pp. 755-799.

Horng-Jaan Li, Cheh-Chih Yeh
Oscillation Criteria for Nonlinear Differential Equations, pp. 801-811.

Zachariah Sinkala
Existence of Solutions to Periodic Boundary Problems With Unbounded Nonlinearity, pp. 813-821.

Susanne C. Brenner
A Two-Level Additive Schwarz Preconditioner for Macro-Element Approximationsof the Plate Bending Problem, pp. 823-844.

J. F. Davis, M. M. Marsh
Hereditarily Weakly Confluent Mappings on Acyclic Continua, pp. 845-856.