*Editors*: D.G. Bourgin (Houston), J. Hausen (Houston), G.G. Johnson (Houston), B. Jóhnson (Nashville), J.W. Neuberger (Emory), B.H. Neumann (Australian National University)
*Managing Editor*: A. Lelek (Houston)
*Associate Managing Editor*: J.A. Johnson (Houston)

Houston Journal of Mathematics

*Contents*

**Douglas Campbell, George Piranian
**

Problems on the Normality of Holomorphic Functions, pp.
1-13.

**Gengzhe Chang
**

A Proof of a Theorem of Douglas and Neumann by Circulant Matrices, pp. 15-18.

**J. DeFranza
**

Products of Summability Methods, pp. 19-28.

**B. Domanski
**

The Complexity of Two Decision Problems for Free Groups, pp. 29-38.

**Temple H. Fay, Edwin P. Oxford, Gary L. Walls
**

Preradicals in Abelian Groups, pp. 39-52.

**George K. Francis, Stephanie F. Troyer
**

Continuation: Excellent Maps With Given Folds and Cusps, pp. 53-60.

**E. Graczynska, F. Pastijn
**

Proofs of Regular Identities, pp.
61-67.

**Charles L. Hagopian
**

Arcwise Connectivity of Continuum-Chainable Plane Continua, pp. 69-74.

**Steven M. Kahn
**

The Conner-Miller Classes of a Product Involution and Borsuk-Ulam Type Theorems, pp. 75-84.

**G. P. Kapoor, A. K. Mishra
**

Distortion Theorems for Some Classes of Analytic Functions, pp. 85-92.

**Glenn R. Luecke, Justin R. Peters
**

Analytic Functions of Operators That Satisfy Polynomial Identities, pp.
93-107.

**Lee Mohler
**

Arc Components and Density in lambda-Dendroids, pp.
109-117.

**Togo Nishiura, Choon Jai Rhee
**

Contractibility of the Hyperspace of Subcontinua, pp.
119-127.

**Lex G. Oversteegen, E. D. Tymchatyn
**

Plane Strips and the Span of Continua, (I), pp. 129-142.

**Eric K. van Douwen
**

An Infinite Product of Continua Without Nontrivial Embeddings Into Itself, pp. 143-145.