Mathematics

General

• Planet Math a virtual mathematical community, created collaboratively. It includes the Mathematics Encyclopedia.
• Math World – "The web's most extensive mathematics resource", covering also physics, chemistry, astronomy and scientific biography.
• Cut-the-Knot - several maths topics, sometimes with proofs and historic references.
• Topics in Mathematics: materials for people from grammar school to graduate and professional mathematicians.
• SOS Math - a variety of maths subjects, some at university level.
• Math Help Central.
• Math goodies - elementary math lessons.
• Platonic Realms
• the Google directory for mathematics.

In Portuguese

• Atractor – Interactive Mathematics.
• Nonius in Coimbra: a resource site.
• Matemática Essencial para o Ensino Médio e Superior – a Brazilian site.
• Matemática em acção

Periodic publications

• Plus Magazine, aiming at introducing readers to the beauty and the practical applications of mathematics.
• Nexus Network Journal, on math and architecture.

History

• Mac Tutor History of mathematics at St Andrews.
• Historic math books online
• Scientific biographies at Math World.
• Quite a number of well-organized links at Trinity College, Dublin.
• Euclid's Elements - online, and interactive.
• The Euler Project - translations of Euler's work on the web.
• Pedro Nunes: 1502 - 2002
• History of Mathematics in Portugal and more!

Geometry

• Pythagorean theorem: one, two, interactive proofs, and a collection of other proofs.
• Special Plane Curves
• Solids: interactive, Platonic and Archimedean.
• One, two, three sites about Euler's formula (F-A+V=2).
• Klein bottles and the like.

Math Problems and Puzzles

• Problems from the Putnam competition: one site, with a few graphical problems, but very complete, and another one, with PS and PDF files.
• Math Olimpiads: Portuguese and International.
• Java games and puzzles (such as Hex and a daily chess problem) at Maze Works

Mathematics and...

• Virtual math museum
• Math and Music || The sound of mathematics
• Math digest – math in the newspapers.
• Mathematical Fiction
• Math in the movies
• Math and Art, a number of links from "Topics in Mathematics".
• Viktor Vasarely || M C Escher.

Miscellaneous

• A mathematical thesaurus
• The prime page
• Mathematical Fallacies - spot the error.
• Beyond the third dimension
• Mathematical quotations - try a random one.
• Magic squares
• Education cartoons by Glasbergen.

You may like to visit the math links pages of Catarina Santa-Clara and Jorge Nuno Silva.

URL for this page: hermite.cii.fc.ul.pt/~pedro/math.html

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