Leroy J. (Lee) Dickey

Professor Emeritus

Welcome to my home page.

[ Teaching | Geometry | APL & J | More ]

Teaching at the University of Waterloo

Courses I am teaching now and other terms.

Geometry

I am interested in Geometry, including finite geometric structures, like finite projective planes and finite hyperbolic planes.

Here are some very nice geometrical things.

I was very furtunate to stumble across a beautiful family of conics in the real projective plane. A technical outline of a paper called " On a Family of Conics" features a theorem about conics that I discovered using Cabri-Géomètre and Cabri Geometry II. The proof makes use of Maple, the symbolic algebra program. An earlier version of this paper, entitled Families of Conics is included as a submission to the Math Forum Also of interest is the Corner for Interactive Geometry
If you have Cabri Geometry II you can view the Families of Conics dynamically. Even if you don't have the complete version, you can get a demonstration version for two popular home computer systems:
- for MacOS
- for Dos or Windows
A great set of polyhedra from Magnus Wenninger, marvelous in their intricate detail and complexity.
The Garden of Polyhedra cultivated by Ulrich Mikloweit.
Juno's World, The work of Junichi Yananose. Here you will find some of the most complicated burr puzzles I have ever seen.
Geometria and Polyhedron are interactive programs by Stelian Dumitrascu.
Henry Chasey's Polyhedra Model Collection. Sources in Long Island,New York .
Henry Chasey's Polyhedra Model Collection. Waterloo mirror site.
George Hart's Pavillion of Polyhedriality.
Tom Gettys' Polyhedra Hyperpages .
A collection of uniform polyhedra maintained by Roman Maeder.

APL and J Progamming Languages

These are some things about the programming languages APL and J that interest me.

At the University of Waterloo, I maintain the APL and J Archives.
At the University of Economics and Business Administration in Vienna, The Department for Applied Computer Science maintains a mirror of the Waterloo sites. Users in Europe might find this site convenient.
- The Vienna APL mirror of Waterloo's APL Archives.
- The Vienna J mirror of Waterloo's J Archives.
Some APL publications about APL and J:
- . This paper is an introductions to some of the special features of J.
- APL Quote Quad, the newsletter of the Special Interest Group for APL (SIGAPL) of the Association for Computing Machinery (ACM).
- BURKS, Brighton University Resource Kit for Students, is a collection of excellent material for students, and is available in online and CD editions. It includes a first rate section on APL. Why doesn't every university have a collection like this for their CS students?
- Gimme Arrays, the newsletter of Toronto APL Special Interest Group.
- VECTOR, the newsletter of The British APL Association.
- Nouvelles d'APL published by Association Francophone pour la promotion du langage APL.
Standards work:
- ISO-IEC/JTC1/SC22, the Committee on Programming Languages
- ISO-IEC/JTC1/SC22/WG3, the APL Working Group home page .
  - ISO means International Standards Organization
  - IEC means International Electrotechnical Commission
  - JTC means Joint Technical Committee
  - SC means Sub-Committee
Some freely avaiable International Standards (ISO) may be downloaded from ISO.
A Usenet News Group for APL: comp.lang.apl
APL-FAQ, Sam's Latest version. .
Some APL pages from organizations
- The J homepage.
- The APL2 homepage Products
- TRYAPL and APL2 from IBM
- Q'Nial (NIAL Systems Limited) , with E-mail available at info@nial.com
Some APL pages from individuals
- Andreas Geyer-Schulz, in Vienna.
- Jim Weigang, in Massachussets.
- Rex Swain, in Connecticut and his APL Information page.
- Steven Halasz, in Chicago.
The The APL White Pages. Some famous APLers are in this list.

More about Professor Dickey

Click here for more information about Prof. Dickey.

More about Kitchener-Waterloo

A map of the University of Waterloo Campus.
A map showing streets around the University of Waterloo.

Making contact.

Send e-mail:

LJDickey@Math.UWaterloo.CA

Send a letter:

Prof. L. J. Dickey
Dept. of Pure Mathematics
Faculty of Mathematics
University of Waterloo
Waterloo, Ontario Canada N2L 3G1

Drop by my office:

MC 5158 (in the Math and Computer building)

Call me:

Office: +1-519-888-4567, Extension 35557, (shared line, voice mail is not recommended)
Home: +1-519-885-7261

Send a Fax:

+1-519-725-0160, (Departmental FAX)

Lifetime Warranty
To the top of my home page . . .
Third Age Learning, Kitchener-Waterloo