# math

## 12/16/13 Gil's LotD: Obscure trig functions

http://blogs.scientificamerican.com/roots-of-unity/2013/09/12/10-trig-functions-youve-never-heard-of/ Trig functions long forgotten to time.

## 10/14/12 Gil's LotD: Statistics and R

http://ipsur.org/ An introductory textbook to statistics and the R programming language.

## 4/28/12 Gil's LotD: Math books

http://www.gutenberg.org/wiki/Mathematics_%28Bookshelf%29 Project Gutenberg has started typesetting out-of-print math books in LaTeX.

## 10/29/11 Gil's LotD: Battleship

http://thevirtuosi.blogspot.com/2011/10/linear-theory-of-battleship.html A look at a system that estimates the probability of ship placements in Battleship.

## 10/6/11 Gil's LotD: Furniture arrangement

http://www.youtube.com/watch?v=vlDoSv6uDKQ UCLA mathematicians have created a system for automatically arranging furniture.

## 9/17/11 Gil's LotD: Imaginary numbers

http://betterexplained.com/articles/a-visual-intuitive-guide-to-imaginary-numbers/ An explanation of how imaginary numbers work as a rotation.

## 7/24/11 Gil's LotD: Braess's paradox

http://en.wikipedia.org/wiki/Braess%27s_paradox It turns out that adding road capacity can sometimes cause worse travel times.

## 6/8/11 Gil's LotD: Crocheting math

http://www.cabinetmagazine.org/issues/16/crocheting.php An interview with two professors who crocheted hyperbolic shapes to demonstrate their properties.

## 4/11/11 Gil's LotD: Hangman

http://blog.wolfram.com/2010/08/13/25-best-hangman-words/ This post comes up with a method to find the hardest to guess hangman words and gives a list.

## 12/25/10 Gil's LotD: Calculus

http://www.youtube.com/watch?v=P9dpTTpjymE A calculus parody of I Will Survive.

## 12/21/10 Gil's LotD: Water computers

http://en.wikipedia.org/wiki/Water_integrator The USSR built a computer that used water to perform all of its calculations.

## 7/16/10 Gil's LotD

http://video.google.com/videoplay?docid=-6626464599825291409# A very understandable video introduction to the mathmatical field of topology.

## 5/20/07 Gil's LotD

5/20/07 Gil's LotD

http://worsethanfailure.com/Articles/Classics-Week-Chocolate-Covered-SQL-.aspx The software that designed this packaging had a SQL bug resulting in the query being printed on the package.

http://img218.imageshack.us/my.php?image=goodiewf2.jpg That's right.

## 5/13/07 Gil's LotD

5/13/07 Gil's LotD

http://www-old.cs.st-andrews.ac.uk/~morph/Transformer/ An online program that you can use to transform and play with your face.

http://www.flickr.com/photo_zoom.gne?id=475270221&size=o&dupe A cool magazine ad for a travel company.

## 5/8/07 Gil's LotD

5/8/07 Gil's LotD

http://modular.math.washington.edu/sage/ SAGE, open source math software. Does it go in the email field?

http://www.youtube.com/watch?v=TNp7QKugzZE Music video for a remix of Gay Boyfriend by The Hazzards. The original video is in the sidebar.

http://www.youtube.com/watch?v=L9HaNbsIfp0 A cover of the HD-DVD key.