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Many people have helped in building the Combinatorial "Object Server" (COS) and I thank them all.

COS runs on machines housed in the Department of Computer Science at the University of Victoria.

**Gang Li:**(Was the maintainer of the tree page.) Now retired (actually he graduated).

**Udi Taylor:**Was the maintainer of the permutations page.

**Malcolm Smith:**Wrote the program for generating spanning trees.

**Bette Bultena:**Was the maintainer of the Subsets and Combinations page. Now retired (i.e., graduated).

**Joe Sawada:**Polynomials, bracelets, necklaces, and lots of general maintenance and development.

**Scott Lausch:**(Created the stamp-folding and Genocchi permutation generators.)

**Ryan Sutherland**(The background to this page +.)

**Jeremy Schwartzentruber**(Setting up the initial server +.)

**Bette Bultena**(Program translations.)

**Glen Chen**(Program translations, gif design, counter implementation + MUCH MORE)

**Norm Buchanan**(work on poset section)

**Melissa Etheridge**(converting the generation pages to perl cgi scripts).**Quinn Liddicoat**is the current maintainer of the COS website.

- NSERC through my operating grant, the equipment grant (used to purchase the Sun Ultra on which the Object Server now runs), and the departmental NSERC infrastructure grant.
- Industry Canada (for their support ofECOS).

**Will Kastelic**(For answering all my stupid questions + .....)**Gord Broom**(For setting up the server on sue.uvic.ca).

**Carla Savage**--- The graphical partition generator.

**Brendan McKay**--- The generators of unlabeled and bicoloured graphs:**makeg**and**makebg**.**Joe Culberson**--- The program for generating unlabelled posets (not yet integrated into COS).

**Richard Webber**--- The program for generating red-black trees.

**John M. Boyer**--- The program for generating polyominoes.

**Joe Sawada**--- The program for generating unlabelled necklaces.

**Malcolm Smith**--- The program for generating spanning trees of graphs.

**Wendy Myrvold**For lending me her SPARC-20, "figaro".

**Steve Ward**(from MIT).**Appolo Hogan**(from U. Colorado).**Jan de Heer**(from ubn.nl).

Here are some sites that refer to the Object Server or some part of it.

- If you do a Britanica search for "Combinatorial" then COS is listed under "the web's best sites"
- COS was selected as a "knot" in the "braid of links" for the week of May 13, 1997
- COS is included in this ring of math sites
- Dr. Matrix Category: Mathematics

- There's a link to COS from Mitch Harris' homepage
- The COS tree generation section is listed by the Math Department of Tampere University of Technology Finland
- There a link to COS on this page from Latvia. Both COS and AMOF are on this page
- Francis Edward Su is a faculty member in the Department of Mathematics at Harvey Mudd College
- John Kececioglu is a faculty member in the Department of Computer Science at the University of Georgia
- Ric Lister of the Georgetown Institute for Cognitive and Computational Sciences lists COS on his list of Science and Maths links
- Richard Webber's publication page has a reference to the red-black tree generation part of COS
- Einar Steingrimsson's bookmark list
- From Tampere University of Technology in Finland, links to COS's permutation, combination, necklace, and tree generation pages
- The University of Calgary Library lists COS in its "Mathematics & Statistics Web Page
- The University of Haifa Mathematics Department
- Roger Blumberg's Mathematics Reference Page
- David G. Wagners k3wL s1Te Li$T, COS is one of five mathematics sites listed
- E.J. Inglis-Arkell's Materials, Background, and Courses
- The University of Alaska at Anchorage Math Solutions Group Math Tools Page
- The COS info on derangements page is referenced on this page of the "Leadership program in Mathematics" from Rutgers University
- COS has made it onto Thomas Tautenhahn's bookmark list
- COS has made it onto Pekka Orponen's bookmark list
- Ron Knott is a lecturer in Computing at the University of Surrey (UK)
- Matthew R. Nelson's Computation Related Links
- The pentomino Information page is listed on this list of pentomino pages by Predrag Janicic
- Para Secção de Matemática
- Algorithm links
- Mathematics and Computer Science Links of David Berman
- Herbert Wilf's Home Page
- Frank Ruskey's Home Page
- Dr. Joe DeMaio Assistant Professor of Mathematics
- A terrific combinatorial object generator, it's been of great use while testing little lemmas and such as I stumble upon them
- Ath's Web page

- Professor Edward Reingold at U. Illinois has a link to COS from the CS491 Homepage
- Eitan Gurari, a professor at Ohio State University, has a link to COS from one of his course notes pages
- Math 455, a Graph Theory course from Missippi College
- This page about "Graph Lattices" contains a link to the COS information page on "Ideals of a Poset"
- They refer to COS's information page on combinations
- We're on a page about Graph Theory
- The pentomino Information page is listed on this Math 416 Homepage from Northern Illinois University
- MIT Course: Combinatorial Analysis: 18.314
- UVic Course: CSC 482A Combinatorial Generation
- Math 23 - Cabrillo College

- COS is a site recommendation in the Combinatorics section of Hotbot
- COS is one of the sites that comes up on Oingo's "meaning-based" search engine under the subcategory Science/Math/Combinatorics
- May 1996, listed under topics in mathematics
- November 1995, listed under topics in mathematics
- David Eppstein's "Geometry Junkyard" entry on polyominoes and other Animals
- The "WWW Virtual Library for Mathematic"'s list of General Resources
- CAMEL's student mathematics resources, and educational mathematics resources
- People of the analysis of algorithms pages
- Greater Cincinnati Science Education Center

- COS is on this page of Resources for the Analysis of Algorithms maintained by Helmut Prodinger at the Technischen Universität Wien, Austria
- Both COS and the Venn Diagram page are listed as "Web Resources" under "Combinatorics"
- Tim Carr, a math teacher at a middle school, lists COS as one of "sites that really work for me"
- COS is listed under "Probability" on the EDDIE football analysis page
- Joe Culberson's (graph) coloring page
- The University of Florida Mathematics Department maintains a "Mathematical resources on the Web
- Jan Kok's Polyomino problems and variations of a theme page
- The Pentomino information page is listed on this page entitled Pentominoes en Polyominoes
- Kadon enterprises, also called GamePuzzles has a link to the Pentomino information page
- R and A Media, Inc. page on the CALMPLEX puzzle has a link to the COS information page on pentominoes
- This page from Hungary has a link to the Pentomino information page
- This page of Notes on Martin Gardner contains a link to the Pentomino information page
- Sergei Duzhin has a link to COS in his list of about 20 useful links
- COS is on the Link Leviathan from Upham High School in North Dakota
- Marindale's Graduate and Undergraduate Center: The "Virtual" - Mathematics Center
- COS is listed on Mathematics WWW Links from Drew Campbell, a student at Dalhousie University
- Ed Pegg Jr. has set up www.mathpuzzle.com
- Schoolnet (not to be confused with Canada's Schoolnet) has a link to COS under Mathematics
- Art Pannek's bookmarks has a link to COS under Science Facts
- Jay Jenicek has a well done pentominoes page that refers to the COS pentomino info page
- Jay W. Stumpel's pentomino page refers to COS's pentomino information page
- Pentominoes info page is referred to in this diary entry of Frans Faase
- John Edward Miller's "webmarks" has a link to the pentominoes information page
- COS has made it onto Gregory Kucherov's bookmark list
- COS is on this list of Interactive Statistical Calculation Pages by John C. Pezzullo
- The Center for Network Resources and Training at South Carolina State University maintains a page of math links
- Florent Chabaud's page on Galois Fields has a reference to the COS info page on irreducible polynomials
- Julie Lawrence, a graduate student at the University of Queensland
- COS is listed on this Swedish site Länkar, from Pontus Andersson's homepage
- Math Forum Internet News
- Math Forum Internet Mathematics Library
- Glenn Rhoads' Home Page
- Langara College - Department of Mathematics and Statistics
- List of some useful links related to Statistics
- Random generation of Combinatorial Structures
- Bookmarks for Doug Moore
- Archives: Topics in Mathematics
- Open dictionary project: Combinatorics
- Mathematics Sites for Educators
- Vincent Vajnovszki's home page
- Jon Roegele's home page
- Bookmarks for horsey@umich.edu
- Jens Liebehenschel's Homepage
- Venn Diagrams Reference Page
- Alley CATs in Search of Good Homes
- Web Pages that Perform Statistical Calculations!
- Here is a brief outline of my current and intended research
- Generating Binary Trees by Rotations
- edu-links: Discrete Math
- Math Forum Internet Collection
- Glenbrook School
- T.I.D. Ronse School in Belgium, Page on Pentominos