NumberADay -
Every working day, we post a number and offer a selection of that number’s properties.
posted by Wolfdog
on Jan 11, 2012 -
30 comments
Mathematics Illuminated is a set of thirteen surveys in varied topics in mathematics, nicely produced with video, text, and interactive Flash gadgets for each of the topics.
posted by Wolfdog
on Apr 14, 2010 -
8 comments
Trigonometric Delights. This book is neither a textbook of trigonometry—of which there are many—nor a comprehensive history of the subject, of which there is almost none. It is an attempt to present selected topics in trigonometry from a historic point of view and to show their relevance to other sciences. It grew out of my love affair with the subject, but also out of my frustration at the way it is being taught in our colleges.
posted by Wolfdog
on Mar 24, 2010 -
18 comments
Who is Alexander Grothendieck? [PDF]
This lecture is concerned not with Grothendieck's mathematics but with his very unusual life on the fringes of human society. In particular, there is, on the one hand, the question of why at the age of forty-two Grothendieck first of all resigned his professorship at the Institut des Hautes Etudes Scientifiques (IHES); then withdrew from mathematics completely; and finally broke off all connections to his colleagues, students, acquaintances, friends, as well as his own family, to live as a hermit in an unknown place. On the other hand, one would like to know what has occupied this restless and creative spirit since his withdrawal from mathematics.
posted by Wolfdog
on Aug 17, 2008 -
31 comments
If you could use a great big free handbook of discrete math and algorithms, Jörg Arndt's
fxtbook wants to be your friend. Plain text
table of contents to whet your appetite.
posted by Wolfdog
on Mar 5, 2008 -
11 comments
The Prime Game is not really much of a game, but it
is a neat & little-known fact about the decimal representation of prime numbers.
posted by Wolfdog
on Jul 10, 2007 -
24 comments
Project Euler is a running contest of programming challenges to hone your algorithm skills.
"Each problem is designed according to a 'one-minute rule', which means that although it may take several hours to design a successful algorithm with more difficult problems, an efficient implementation will allow a solution to be obtained on a modestly powered computer in less than one minute."
posted by Wolfdog
on Aug 20, 2005 -
11 comments
The Spidron is an interesting geometric construction that seems to lend itself to folding, dissection, and space-filling in two and three dimensions.
posted by Wolfdog
on Jul 17, 2005 -
9 comments
