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Designs and configurations, as a branch of Combinatorics. MSC classification 05Bxx.

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Coding Theory@ (112) Matroids (8) Software (3)

Links:

Orthogonal Arrays and Covering Arrays Construction of orthogonal arrays and covering arrays using permutation groups by George Sherwood. home.att.net/~gsherwood/cover.htm

Library of D-optimal Designs Compiled by Jennifer Seberry. www.uow.edu.au/~jennie/D-optimal.html

Design Resources Links to resources for design theory maintained by Peter Cameron. www.maths.qmw.ac.uk/~pjc/design/resources.html

Design Theory Lecture notes on the Web Links compiled by Peter Cameron. 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. www.designtheory.org

Handbook of Combinatorial Designs Home page for The CRC Handbook of Combinatorial Designs. www.emba.uvm.edu/~dinitz/hcd.html

StatLib - Designs Archive With programs and algorithms for creating designs for statistical experiments. lib.stat.cmu.edu/designs

Ted Spence's Home Page Classification of Hadamard matrices and designs. www.maths.gla.ac.uk/~es

La Jolla Covering Repository A database of good covering designs constructed by Dan Gordon. www.ccrwest.org/cover.html

Library of SBIBD Compiled by Jennifer Seberry. www.uow.edu.au/~jennie/SBIBD.html

The Witt Design The Steiner system S(5,8,24) explicitly computed by Ashay Dharwadker. www.geocities.com/dharwadker/witt.html

Caps in Finite Geometries Tables and examples in PG(k-1,q) by Yves Edel. www.mathi.uni-heidelberg.de/../Matritzen/CAPs/CAPMatIndex.html

Some Constant Weight Codes As orbits of AG(2,q), PSL(2,2^f) and PGammaL(2,2^f) by Yves Edel. www.mathi.uni-heidelberg.de/~yves/Matritzen/CWCodes/CWCode.html

Small Association Schemes Tables of homogeneous coherent configurations by A. Hanaki and I. Miyamoto. kissme.shinshu-u.ac.jp/as

SOMA Update Leonard Soicher reports on new SOMAs, which are generalisations of mutually orthogonal latin squares. www.maths.qmw.ac.uk/~leonard/soma

Orthogonal Arrays A library of over 200 orthogonal arrays maintained by N. J. A. Sloane. www.research.att.com/~njas/oadir

Bill Cherowitzo's Hyperoval Page Hyperovals in Desarguesian Planes and related structures in arbitrary projective planes. www-math.cudenver.edu/~wcherowi/research/hyperoval/hypero.html

Hadamard Matrices A library of Hadamard matrices maintained by N. J. A. Sloane. www.research.att.com/~njas/hadamard

Golomb Rulers - The Search For 20, 21 and 22! The search for optimal Golomb Rulers with 20, 21 and 22 marks. members.aol.com/golomb20

The Hadamard Maximal Determinant Problem List of known {-1,1}-matrices with largest determinant and D-optimal designs. www.indiana.edu/~maxdet

D.H. Rees Home Page Information on Nested and Orthogonal BIBDs and related topics. www.davidhywel.freeserve.co.uk

Blocks and Design Applet Fractional factorial design generator by Marko Boon. www.win.tue.nl/statlab/designApplet.html

Mathworld - Golomb Ruler Description and theory, with references to additional reading. mathworld.wolfram.com/GolombRuler.html

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. www.research.ibm.com/people/s/shearer/grule.html

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. www.distributed.net/ogr

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