## HOUSTON JOURNAL OF MATHEMATICS

### Archived Edition
Vol. 2, No. 2, 1976

*Editors*: R.H. Bing (Austin), D.G. Bourgin (Houston), B. Jóhnson (Nashville), A. Lelek (Detroit), J.S. Mac Nerney (Houston), J.W. Neuberger (Emory), B.H. Neumann (Australian National University), J. Schmidt (Houston)

*Managing Editor*: G.G. Johnson (Houston)

*Associate Managing Editors*: J. Hausen (Houston), J.A. Johnson (Houston)

Houston Journal of Mathematics

*Contents*

**Michael Anshel, Peter Stebe
**

Conjugate Powers in Free Products With Amalgamation, pp.
139-147.

**B. Banaschewski, H. Herrlich
**

Subcategories Defined by Implications, pp.
149-171.

**P. Erdos, R. R. Hall
**

Probabilistic Methods in Group Theory II, pp. 173-180.

**James Austin French
**

Some Completely Normal Spaces in Which Small and Large Inductive Dimension Coincide, pp.
181-193.

**Peter Hilton, Urs Stammbach
**

On Localization and Isolators, pp. 195-206.

**W. B. Jurkat, D. A. Lutz, A. Peyerimhoff
**

Birkhoff Invariants and Effective Calculations for Meromorphic Linear Differential Equation, II, pp. 207-238.

**Matthew Liu, B. E. Rhoades
**

Some Properties of Generalized Hausdorff Matrices, pp. 239-250.

**Peter Roquette
**

On the Division Fields of an Algebraic Function Field of One Variable. An Estimate for Their Degree of Irrationality, pp. 251-287.