# Wiskus

## Talks of 2010

- 21 July, Fourier analysis in digital image processing by Willie Brink (slides).
*How to separate the important details of an image from the not-so-important details. With lots of demonstrations!*
- 11 August, Uncertainty by Konrad Sheffler. Subtitle:
*Konrad Scheffler will give a talk entitled either “How to reason”, “What is Science”, “Bayes for Beginners”, or “Statistics is a Type 3 error”, but he doesn’t know which!*
- 28 July, How to quickly and nonchalantly get from A to B by Bruce Bartlett.
*The brachistochrone and tautochrone problems and how they shaped calculus.*
- 18 August, Mathematics in Photography I by Florian Breuer.
*What the aperture, focal length and f-stop jargon actually means, with simple diagrams to explain it!*
- 25 August, Image processing (Mathematics in Photography II) by Stéfan van der Walt (slides).
*The mathematics behind the pretty pictures. CCD’s, masks, lens distortion, panaromas, super-resolution imaging and more. *
- 1 September, The Towers of Hanoi by Stephan Wagner (slides).
*The best way to transfer hoops from one tower to another. Will the priests accomplish their task before the world ends?*
- 15 September, Counting proofs by Peter Ouwehand (slides).
*An introduction to counting in set theory… and how these ideas help us prove important results like Godel’s theorem. The proof that 1+1=2!*

- 22 September, 8 by John Baez (video from the series My favourite numbers).
*Discover why John Baez loves the number 8… how it features in the “octonions”, a generalization of the complex numebrs, and how it enters into superstring theory!*
- 29 September, e and pi are irrational by Bruce Bartlett.
*Elementary proofs of the facts that the square root of 2, e and pi are irrational.* (Notes for talk).
- 6 October, Die Wiskunde agter Baltrajekte in Golf en Tennis deur Karl Rohwer.
*Come and find out why top-spin, side-spin and backspin have the effect they do! *
- 13 October, Dirk Laurie.