# January 10, 2006

### From MathWiki

- What are we going to do in this class: Web page for the class (
*http://garsia.math.yorku.ca/~zabrocki/math1590w06/*)

- In Monday's newspaper there was an announcement that there was an earthquake which measured 6.8 on the Richter scale and that it was located off the coast of Greece. It turns out that there is a lot of mathematics which is involved in determining the location and magnitude of an earthquake and we looked at just a little of this (we would have looked at more but the technology in the classroom wasn't working properly).
- An article from the Metro about the earthquake (
*http://garsia.math.yorku.ca/~zabrocki/math1590w06/articles/earthquake.pdf*) - Data from the USGS about this earthquake (
*http://garsia.math.yorku.ca/~zabrocki/math1590w06/articles/earthquakedata.pdf*) - USGS information about earthquakes (
*http://earthquake.usgs.gov/*) - How to find the epicenter of an earthquake (
*http://www.geo.mtu.edu/UPSeis/locating.html*) - A map of the location of the epicenter (
*http://www.mapquest.com/maps/map.adp?searchtype=address&formtype=latlong&latlongtype=degrees&latdeg=36&latmin=12&latsec=14&longdeg=23&longmin=26&longsec=38*)

- An article from the Metro about the earthquake (

- We also looked at Sudoku puzzles. I gave you one from 24 Hours and one from the Metro. We will talk more about the mathematics behind the puzzles next week, but in the meantime I want you to think about how to solve the puzzles and more importantly, how do you explain to me how you are solving them. I am really curious about what techniques you are using because most of you seemed to be able to solve them faster than I could.

- The first assignment: Due January 24, 2006
- Read the first chapter of Thinking Mathematically (
*http://www.amazon.com/gp/product/0201102382/104-0245408-9260748?v=glance&n=283155*) (hereafter labeled TM) - Solve a Sudoku puzzle and give a written explanation of your steps of logic when you solved it
- Do the problem titled 'Arithmagons' on page 160 of TM

- Read the first chapter of Thinking Mathematically (

Next class : January 17, 2006

Main class page : Mathematics 1590 Nature of Mathematics II