Everest trip helps critically ill

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Baby Jupiter's huge weight gain

The planet Jupiter must have gained mass fast during its infancy, according to astronomers.

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Black holes 'preceded galaxies'

Astronomers believe they have solved a cosmic chicken-and-egg question: what came first - black holes or galaxies?

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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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Panda bites his third tourist in two years at Beijing zoo

A panda at Beijing zoo bites a man for the third time in two years.

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US vows 'huge' marine protection

The US is to establish "the largest area of protected sea in the world", banning fishing and mining, around its Pacific islands.

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Body repair 'could be ramped up'

A combination of drugs could trick the body into sending its repair mechanisms into overdrive, say scientists.

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Poetry or science?

Is romantic love just a chemical cocktail?

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First flight of algae-fuelled jet

Continental Airlines is the latest to test fly a jet biofuel, this time with a product derived partially from algae.

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Mosquitoes make sweet love music

Sexy songs sung by mosquitoes in courtship could be key to curbing the spread of dengue fever, say scientists.

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Earth Watch

Why it is hard to predict sudden environmental crises

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Heat may spark world food crisis

Half the world's population could face food crisis by 2100 as soaring temperatures cripple staple crops, scientists warn.

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Zimbabwe troops 'eat elephants'

A Zimbabwean wildlife campaigner tells the BBC that soldiers are being given elephant meat to eat, as the economic crisis deepens.

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Canadians claim South Pole record

A trio of Canadians claim a new record for the fastest trek across Antarctica to the South Pole.

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Our writers talk back

Some of the previous contributors to the Green Room respond to readers' questions and comments.

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Holes give edge to new armour

Scientists from the UK Ministry of Defence (MoD) have devised ultra-hard vehicle armour to protect military personnel.

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Feilden's blog

Ground-breaking new technique in stem cell science

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On a mission to find the most famous ship of science

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Animal matters

Scotland's debate over tests on primates

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Venomous mammal caught on camera

Rare footage of one of the world's most strange and elusive mammals is captured by scientists.

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Mummy of female pharaoh uncovered

Egyptologists find remains of a mummy thought to belong to a queen who ruled 4,300 years ago, Egypt's antiquities chief announced.

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Eat it or lose it - why centuries of crop diversity are at risk

Centuries of crop diversity are at risk of being lost forever as farmers turn to just a few modern, high yielding varieties.

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Tech fair offers greener vision

Analysts at the Consumer Electronics Show say green credentials of tech products will become critical to success.

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China alert over bird flu death

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 Science > Math > Algebra > Geometric Algebra

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Science > Math > Algebra > Geometric Algebra

Geometric Algebra:

Clifford

A Maple package for computations in Clifford algebras of an arbitrary bilinear form. Includes documentations of new features and installation information, as well as downloads of the software.

http://math.tntech.edu/rafal/cliff5/

Graand

Free Classified Ads Portal

www.graand.com

The CLU Project

Aims to produce tools for use with Clifford algebra. Includes information on the visualisation libraries and calculators produced, as well as downloads.

http://www.perwass.de/CLU/

GA-Net

Free electronic newsletter on Clifford algebra and geometric algebra. Archive, free subscription functions and submission information.

http://sinai.mech.fukui-u.ac.jp/GA-Net/

Geometric Algebra

C.J.L. Doran's thesis on applications of Clifford algebras. Downloadable in PostScript format.

http://www.mrao.cam.ac.uk/~clifford/publications/abstracts/chris_thesis.html

Geometric Calculus Research and Development

Includes a brief introduction, articles and book chapters on the subject, as well as references to further information.

http://modelingnts.la.asu.edu/GC_R&D.html

ICCA7

7th International conference on Clifford Analysis and their applications in Mathematical Physics. Université Paul Sabatier, Toulouse, France; 19--29 May 2005.

http://www.icca7.ups-tlse.fr/indexusa.html

International Clifford Algebra Society

Includes an abstracts mailing list, information on events and back copies of the journal "Advances in Applied Clifford Algebras".

http://clifford.org/

Maths for (Games) Programmers: Multivector Methods

An introduction on this formalism and its applications in space-time.

http://www.iancgbell.clara.net/maths/geoalg.htm