Terry & Cole out of Belarus match

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news.bbc.co.uk

Civic pride

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news.bbc.co.uk

Send your video, pictures and story ideas

Have you got a good story? BBC News wants to hear from you.

news.bbc.co.uk

Asian stocks repeat US successes

Tokyo's Nikkei index soars 10% higher, matching gains seen in New York, as confidence starts to return to financial markets.

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Parliament hit by green protest

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IFA sacks chief executive Wells

Irish Football Association chief executive Howard Wells has been sacked.

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Newcastle sale 'progressing well'

The sale of Newcastle is progressing "extremely well", according to the man responsible for brokering the deal.

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Mbeki seeks to save Zimbabwe deal

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Welsh-only police car sign denied

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The scale of the delays affecting England's school rebuilding project is revealed by a parliamentary question.

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A teenager dies

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Wildcats forward Watene dies

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House sales hit new 30-year low

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Whale deal falls at last minute

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Rhys trial told of suspect threat

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Dutch 'HIV attack' trial begins

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Ministers shelve 42-day detention

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Anteaters get antsy over Thailand violence

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LA firefighters battle wildfires

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 World Catalog > Science > Math > Combinatorics > Design Theory

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World Catalog > 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 Lecture notes on the Web

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

Golomb Rulers - The Search For 20, 21 and 22!

The search for optimal Golomb Rulers with 20, 21 and 22 marks.

http://members.aol.com/golomb20/

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/

Mbeki seeks to save Zimbabwe deal

Ex-South African President Thabo Mbeki arrives in Harare to try and salvage the power-sharing deal he brokered last month.

news.bbc.co.uk

A teenager dies

But what can anyone say to a grieving parent?

news.bbc.co.uk

House sales hit new 30-year low

The slump in the property market is worsening, the latest survey from the Royal Institution of Chartered Surveyors says.

news.bbc.co.uk

Rhys trial told of suspect threat

The teenager accused of murdering Rhys Jones told a girl the alleged target was going to "get it", a court hears.

news.bbc.co.uk

Terry & Cole out of Belarus match

Injured duo John Terry and Ashley Cole will miss England's World Cup qualifier against Belarus, and keeper Robert Green is also out.

news.bbc.co.uk

IFA sacks chief executive Wells

Irish Football Association chief executive Howard Wells has been sacked.

news.bbc.co.uk

Whale deal falls at last minute

Hope for consensus between environmentalists and whalers in Barcelona is derailed by a last-minute Australian intervention.

news.bbc.co.uk

Asian stocks repeat US successes

Tokyo's Nikkei index soars 10% higher, matching gains seen in New York, as confidence starts to return to financial markets.

news.bbc.co.uk

Motorists stopped over pub murder

Strathclyde Police release details of the vehicle they believe was used in a double shooting outside a Glasgow pub.

news.bbc.co.uk

Send your video, pictures and story ideas

Have you got a good story? BBC News wants to hear from you.

news.bbc.co.uk

Speaker 'to probe' Blair F1 claim

The Commons speaker promises to look at claims Tony Blair misled MPs over exempting Formula One from a tobacco advertising ban.

news.bbc.co.uk

In pictures

The latest show in Tate Modern's Turbine Hall

news.bbc.co.uk

Mike Baker

Are we asking too much of our teachers?

news.bbc.co.uk

LA firefighters battle wildfires

Firefighters tackle wildfires near Los Angeles which have caused two deaths, with 12,000 driven from their homes.

news.bbc.co.uk

Welsh-only police car sign denied

North Wales Police say they have no plans to remove the word "police" and leave only the Welsh "heddlu" on vehicles.

news.bbc.co.uk

Dutch 'HIV attack' trial begins

Three men go on trial in the Netherlands accused of deliberately infecting at least 14 other men with HIV.

news.bbc.co.uk

Newcastle sale 'progressing well'

The sale of Newcastle is progressing "extremely well", according to the man responsible for brokering the deal.

news.bbc.co.uk

Civic pride

The local response to the world financial crisis

news.bbc.co.uk

Ministers shelve 42-day detention

Home Secretary Jacqui Smith says plans to extend terror detention to 42 days will be dropped from current bill.

news.bbc.co.uk

US election quiz

Race to the White House: test your knowledge

news.bbc.co.uk

Anteaters get antsy over Thailand violence

Zookeepers in Bangkok move two anteaters out of the city, fearing stress caused by noisy recent clashes could make the sensitive animals ill.

news.bbc.co.uk

Exit route

The euthanasia expert advising over-50s on suicide

news.bbc.co.uk

Parliament hit by green protest

Police close the main public entrance to Parliament after environmental protesters try to force their way in.

news.bbc.co.uk

Wildcats forward Watene dies

Wakefield prop forward Adam Watene, 31, dies after taking part in a training session.

news.bbc.co.uk

Schools hit by rebuilding delays

The scale of the delays affecting England's school rebuilding project is revealed by a parliamentary question.

news.bbc.co.uk