Owner: Last edited on January 18, 2006 5:57 pm by "admin"
Raymond Smullyan, a Mathematician, Philosopher and author of several outstanding books of logical puzzles, tells, in one of his books, a revealing story. A friend invited him for dinner. He told Smullyan that his teenage son was crazy about Smullyan...
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What is this triangle?
Throughout the years as an engineer, I have needed to research topics on engineering, physics, chemistry, mechanics, mathematics, etc. The Internet has made the job infinitely simpler, with the caveat that you have to be careful of your sources. Anyo...
A collection of free, web browser-based apps that aim to make mathematics intuitive for learners of all ages.
I have a love/hate relationship with calculus: it demonstrates the beauty of math and the agony of math education.
An idler's miscellany of compendious amusements
The cocky exponential function is strolling along the road insulting the functions he sees walking by. He scoffs at a wandering polynomial for the shortness of its Taylor series. He snickers at a passing smooth function of compact support and its ...
This short computer graphics animation presents the regular 120-cell: a four dimensional polytope composed of 120 dodecahedra and also known as the hyperdodecahedron or hecatonicosachoron. The figure is built up through a sequence of subsequent foldi...
Genius fast calculation by kids
Imaginary numbers always confused me. Like , most explanations fell into one of two categories:
Print Cartesian, engineering, polar, isometric, hexagonal, probability, Smith chart and logarithmic graph paper free from your computer.
A factorion is an which is equal to the sum of of its digits. There are exactly four such numbers: