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Holes give edge to new armour

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Zimbabwe troops 'eat elephants'

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Mosquitoes make sweet love music

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'Wolfman' returns

Explorer Jim McNeill tracks down Arctic wolves

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A deep-sea fish caught in the Pacific has mirrors for eyes

A deep-sea fish caught in the Pacific has eyes which use mirrors as well as lenses, scientists discover.

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Venomous mammal caught on camera

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 Science > Math > Combinatorics > Design Theory

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Science > Math > Combinatorics > Design Theory

Design Theory:

Bill Cherowitzo's Hyperoval Page

Hyperovals in Desarguesian Planes and related structures in arbitrary projective planes.

http://www-math.cudenver.edu/~wcherowi/research/hyperoval/hypero.html

Blocks and Design Applet

Fractional factorial design generator by Marko Boon.

http://www.win.tue.nl/statlab/designApplet.html

Caps in Finite Geometries

Tables and examples in PG(k-1,q) by Yves Edel.

http://www.mathi.uni-heidelberg.de/~yves/Matritzen/CAPs/CAPMatIndex.html

Graand

Free Classified Ads Portal

www.graand.com

Design Resources

Links to resources for design theory maintained by Peter Cameron.

http://www.maths.qmw.ac.uk/~pjc/design/resources.html

Design Theory

Links compiled by Peter Cameron.

http://www.maths.qmul.ac.uk/~pjc/design/notes.html

Design Theory Resource Server

A research project founded by the UK Engineering and Physical Sciences Research Council.

http://www.designtheory.org/

D.H. Rees Home Page

Information on Nested and Orthogonal BIBDs and related topics.

http://www.davidhywel.freeserve.co.uk

Distributed.net: Project OGR

Describes the computerized effort to prove that the known shortest Golomb rulers (up to 25 marks) are really the shortest, or else find the actual shortest ones.

http://www.distributed.net/ogr/

Golomb Rulers

Table of lengths of shortest known Golomb rulers, counts of optimal and near-optimal rulers, and some Fortran programs for dealing with Golomb rulers.

http://researchweb.watson.ibm.com/people/s/shearer/grule.html

Hadamard Matrices

A library of Hadamard matrices maintained by N. J. A. Sloane.

http://www.research.att.com/~njas/hadamard/

The Hadamard Maximal Determinant Problem

List of known {-1,1}-matrices with largest determinant and D-optimal designs.

http://www.indiana.edu/~maxdet

Handbook of Combinatorial Designs

Home page for The CRC Handbook of Combinatorial Designs.

http://www.emba.uvm.edu/~dinitz/hcd.html

La Jolla Covering Repository

A database of good covering designs constructed by Dan Gordon.

http://www.ccrwest.org/cover.html

Library of D-optimal Designs

Compiled by Jennifer Seberry.

http://www.uow.edu.au/~jennie/D-optimal.html

Library of SBIBD

Compiled by Jennifer Seberry.

http://www.uow.edu.au/~jennie/SBIBD.html

Mathematical Association of America - Math Games: Rulers, Arrays, and Gracefulness

Ed Pegg Jr. writes about the history (and future) of Golomb rulers and related concepts.

http://www.maa.org/editorial/mathgames/mathgames_11_15_04.html

Mathworld - Golomb Ruler

Description and theory, with references to additional reading.

http://mathworld.wolfram.com/GolombRuler.html

Modular and Regular Golomb Rulers

Detailed, theoretical tutorial with references.

http://cgm.cs.mcgill.ca/~athens/cs507/Projects/2003/JustinColannino/

Orthogonal Arrays

A library of over 200 orthogonal arrays maintained by N. J. A. Sloane.

http://www.research.att.com/~njas/oadir/

Orthogonal Arrays

Lists of orthogonal arrays, difference schemes and experimental design tools maintained by Warren F. Kuhfeld.

http://support.sas.com/techsup/technote/ts723.html

Orthogonal Arrays and Covering Arrays

Construction of orthogonal arrays and covering arrays using permutation groups by George Sherwood.

http://home.att.net/~gsherwood/cover.htm

The Search for a Finite Projective Plane of Order 10

By C.W.H. Lam.

http://www.cecm.sfu.ca/organics/papers/lam/paper/html/paper.html

Small Association Schemes

Tables of homogeneous coherent configurations by A. Hanaki and I. Miyamoto.

http://kissme.shinshu-u.ac.jp/as/

SOMA Update

Leonard Soicher reports on new SOMAs, which are generalisations of mutually orthogonal Latin squares.

http://www.maths.qmw.ac.uk/~leonard/soma

Some Constant Weight Codes

As orbits of AG(2,q), PSL(2,2^f) and PGammaL(2,2^f) by Yves Edel.

http://www.mathi.uni-heidelberg.de/~yves/Matritzen/CWCodes/CWCode.html

StatLib - Designs Archive

With programs and algorithms for creating designs for statistical experiments.

http://lib.stat.cmu.edu/designs/

Ted Spence's Home Page

Classification of Hadamard matrices and designs.

http://www.maths.gla.ac.uk/~es/