*Editors*: H. Brezis (Paris), J. Hausen (Houston), J.A. Johnson (Houston), B. Jóhnson (Nashville), A. Lelek (Houston), J. Nagata (Osaka), J.W. Neuberger (Emory), B.H. Neumann (Australian National University), G.-C. Rota (MIT)
*Managing Editor*: G.G. Johnson (Houston)

Houston Journal of Mathematics

*Contents*

**Jiri Adamek
**

Classification of Concrete Categories, pp. 305-326.

**Hassoon Al-Amiri
**

On a Characterization of the Class of Starlike Univalent Functions, pp. 327-332.

**Norman L. Alling
**

An Isomorphism Theorem for Algebraic Function Fields of Genus One Over Real-Closed Fields, pp.
333-343.

**J. T. Arnold, Ryuki Matsuda
**

The n-Generator Property for Semigroup Rings, pp. 345-356.

**R. Beazer
**

Varieties of Modal Lattices, pp.
357-369.

**P. Cerrito
**

Random Walks on Inverse Semigroups, pp.
371-377.

**Morton E. Harris
**

A Characterization of Free Modules Over Algebras of Finite Groups, pp. 379-384.

**W. B. Jurkat, H. J. Zwiesler
**

Reduction of Scalar, Meromorphic Differential Equations of Second Order to Special Form, pp.
385-395.

**James W. Lark, III
**

Spectral Theorems for a Class of Toeplitz Operators on the Bergman Space, pp. 397-404.

**Jean-Michel Morel, Sergio Solimini
**

Optimal Conditions for Solving a Semilinear Elliptic Equation in L^{1} With `Absorbing' Nonlinearity, pp.
405-409.

**Takasi Nagahara
**

A Note on Imbeddings of Non-Commutative Separable Extensions in Galois Extensions, pp.
411-417.

**V. Neumann-Lara, R. G. Wilson
**

Some Properties of Essentially Connected and Maximally Connected Spaces, pp.
419-429.

**Michel Smith
**

Concerning the Homeomorphisms of the Pseudo-Arc X As a Subspace of C(X x X), pp. 431-440.

**Choon Peng Tan
**

Spectrum Localization Using Holder Norms, pp.
441-449.

**Shoji Yokura
**

A Note on Some 3-Dimensional Compact Riemannian Manifolds, pp. 451-453.