## HOUSTON JOURNAL OF MATHEMATICS

### Archived Edition
Vol. 17, No. 3, 1991

*Editors*: H. Brezis (Paris), G.G. Johnson (Houston), J.A. Johnson (Houston), A. Lelek (Houston), J. Nagata (Osaka), B.H. Neumann (Australian National University), G. Pisier (Paris), G.-C. Rota (MIT), R. Scott (Houston)

*Managing Editor*: V. Paulsen (Houston)

Houston Journal of Mathematics

*Contents*

**Ralph deLaubenfels
**

Bounded, Commuting Multiplicative Perturbations of Strongly Continuous Group Generators, pp. 299-310.

**S. D. Iliadis, E. D. Tymchatyn
**

Compactifications With Minimum Rim-Types of Rational Spaces, pp.
311-323.

**Hisao Kato, Akira Koyama, E. D. Tymchatyn
**

Mappings With Zero Surjective Span, pp.
325-333.

**J. K. Kohli
**

Change of Topology, Characterizations and Product Theorems for Semilocally P-Spaces, pp. 335-350.

**Gerhard Gierz, Albert Stralka
**

Connected, Full-Valued Distributive Lattices of Finite Breadth, pp.
351-365.

**Kathryn F. Porter
**

Semi-Reasonable Topologies for Homeomorphism Groups, pp.
367-373.

**J. Adamek, J. Reiterman, F. Schwarz
**

On Universally Topological Hulls and Quasitopos Hulls, pp.
375-383.

**Fan Xianling, Wang Bixiang
**

Remarks on Periodic Solutions of Prescribed Energy for Singular Hamiltonian Systems, pp.
385-393.

**B. Chevreau, C. Pearcy
**

The Isolated Fredholm Spectrum in the Theory of Dual Algebras, pp.
395-403.

**Ben Mathes
**

A Completely Bounded View of Hilbert-Schmidt Operators, pp. 405-418.

**Mohammad K. Azarian
**

On the Lower Near Frattini Subgroups of Generalized Free Products With Cyclic Amalgamations, pp.
419-423.

**Mohammad K. Azarian
**

On the Near Frattini Subgroup of the Amalgamated Free Products of Finitely Generated Abelian Groups, pp.
425-427.

**Pan Soo Kim, Akbar Rhemtulla, Howard Smith
**

A Characterization of Infinite Metabelian Groups, pp.
429-437.

**W. Debski
**

Note on a Problem by H. Cook, pp.
439-441.

**Lex G. Oversteegen
**

Factorizations of Mappings Through Arcs, pp. 443-451.