Madison Math Circle: Difference between revisions

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=What is it?=
[[Image:logo.png|right|600px]]
The UW-Madison math department organizes a series of talks aimed at interested middle school and high school students throughout the semester. Our goal is to present fun talks that give students a taste of interesting ideas in math and science. In the past we've had talks about plasma and weather in outer space, the way images are shaded in video games, and how credit card numbers are securely transmitted over the internet.  


For more information about Math Circles see http://www.mathcircles.org/
For the site in Spanish, visit [[Math Circle de Madison]]
=What is a Math Circle?=
The Madison Math Circle is a weekly series of mathematically based activities aimed at interested middle school and high school students. It is an outreach program organized by the UW Math Department.  Our goal is to provide a taste of exciting ideas in math and science. In the past we've had talks about plasma and weather in outer space, video game graphics, and encryption.  In the sessions, students (and parents) are often asked to explore problems on their own, with the presenter facilitating a discussion. The talks are independent of one another, so new students are welcome at any point.


After each talk we'll have snacks provided by the Mathematics Department, and students will have an opportunity to mingle and chat with the speaker and with other participants, to ask questions about some of the topics that have been discussed, and also about college, careers in science, etc.
The level of the audience varies quite widely, including a mix of middle school and high school students, and the speakers generally address this by considering subjects that will be interesting for a wide range of students.


'''The Madison Math circle was recently featured in Wisconsin State Journal:''' http://host.madison.com/wsj/news/local/education/local_schools/school-spotlight-madison-math-circle-gives-young-students-a-taste/article_77f5c042-0b3d-11e1-ba5f-001cc4c03286.html
[[Image: MathCircle_2.jpg|550px]] [[Image: MathCircle_4.jpg|550px]]


=Alright, I want to come!=
Great!


Sign up for our email list: https://lists.math.wisc.edu/listinfo/math-circle
After each talk we'll have pizza provided by the Mathematics Department, and students will have an opportunity to mingle and chat with the speaker and with other participants, to ask questions about some of the topics that have been discussed, and also about college, careers in science, etc.


If you are a student, we hope you will tell other interested students about these talks, and speak with your parents or with your teacher about organizing a car pool to the UW campus (and tell us how many people are coming so we can purchase the appropriate amount of pizza!)
'''The Madison Math Circle was featured in Wisconsin State Journal:''' [http://host.madison.com/wsj/news/local/education/local_schools/school-spotlight-madison-math-circle-gives-young-students-a-taste/article_77f5c042-0b3d-11e1-ba5f-001cc4c03286.html check it out]!


If you are a parent or a teacher, we hope you'll tell your students about these talks and organize a car pool to the UW (all talks take place in Van Vleck Hall room B231, on the UW-Madison campus).
=All right, I want to come!=
'''We'd also appreciate if you click the "Register" link for the date that your group will be attending.'''


'''Parking''' on campus is free at most (but not all) outdoor parking lots after 4:30pm. Parking lots #25 (Elizabeth Waters) and #26 (Observatory Hill) may be the most convenient. These parking lots are on Observatory Drive just west of the intersection with Charter Street. If you park there, then walk east along Observatory Drive to the top of Bascom Hill, then turn right to Van Vleck Hall. See also the map at http://www.map.wisc.edu/?keyword=public%20parking
Our in person talks will be at, <b>Monday at 6pm in 3255 Helen C White Library</b>, during the school year. New students are welcome at any point!  There is no fee and the talks are independent of one another. You can just show up any week, but we ask all participants to take a moment to register by following the link below:


=Questions?=
[https://forms.gle/5QRTkHngWf43nmCC9 '''Math Circle Registration Form''']
If you have any questions, suggestions for topics, or so on, just email the '''organizers''' (Lalit Jain, Betsy Stovall, and Philip Matchett Wood): [mailto:math-circle-organizers@math.wisc.edu math-circle-organizers@math.wisc.edu].


All of your information is kept private, and is only used by the Madison Math Circle organizer to help run the Circle.


==Talks for Fall 2013==
If you are a student, we hope you will tell other interested students about these talks, and speak with your parents or with your teacher about organizing a car pool to the UW campus. If you are a parent or a teacher, we hope you'll tell your students about these talks and organize a car pool to the UW (all talks take place in 3255 Helen C White Library, on the UW-Madison campus, right next to the Memorial Union).
More details coming!
 
Mark your calendars for the first Math Circle session: Monday October 7, 6pm to 7pm.  More details soon!
 
 
 
<!--
All talks are at '''6pm in Van Vleck Hall, room B231''', unless otherwise noted.






== Fall Schedule ==
<center>
<center>


{| style="color:black; font-size:120%" border="1" cellpadding="14" cellspacing="0"
{| style="color:black; font-size:120%" border="1" cellpadding="14" cellspacing="0"
|-
|-
! Date and RSVP links!! Speaker !! Topic (click for more info)
! colspan="4" style="background: #e8b2b2;" align="center" | Fall Schedule
|-
| February 4, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dGZ0SU9ydkdITDd2MFE5c3BlcHVES2c6MQ#gid=0 Register!] || Jonathan Kane || [[#Infinitely Often | Infinitely Often]]
|-
|-
| February 11, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dEo4eHJxY0NfdWpMZGZtQjU5Wmt1Rnc6MA#gid=0 Register!] || Jean-Luc Thiffeault || [[#Making taffy with the Golden mean | Making taffy with the Golden mean]]
! Date !! Location and Room || Speaker || Title
|-
|-
| February 18, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dEZUcmcta3NaZlk1eGZhZDRCNXMzVmc6MA#gid=0 Register!] || Alison Gordon Lynch || [[#Guarding an Art Gallery | Guarding an Art Gallery]]
| Oct 7 || 3255 College Library || Caitlin Davis || How to Cut a Cake (Fairly)
|-
|-
| February 25, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dDBTRXlTcTVpRlJfdEVlZ2t0dk1nLXc6MA#gid=0 Register!] || Mimansa Vahia || [[#Origami | Origami]]
| Oct 14 || 3255 College Library || Uri Andrews || Math, Philosophy, Psychology, and Artificial Intelligence
|-
|-
| Wed., Feb. 27, 2013 (Public Lecture, '''5pm''', '''B239''') || David Perry || [[#The Coming of Enigma | The Coming of Enigma ]]
| Oct 21 || 3255 College Library || Sam Craig || Fractal geometry and the problem of measuring coastlines
|-
|-
| March 4, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dG1LR2NoeElhVktzSjRudXltX3ZjeWc6MA#gid=0 Register!] || Betsy Stovall || [[#The Game of Nim | The Game of Nim]]
| Oct 28 || 3255 College Library || Cancelled || Cancelled
|-
|-
| March 11, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dDhtZDFrT3hZbXpkcEt3TXYzVl9sVHc6MA#gid=0 Register!] || Greg Shinault || [[#Pythagorean Triples: A Personal Interview | Pythagorean Triples: A Personal Interview]]
| Nov 4 || 3255 College Library || Sam Craig || Proofs of the Pythagorean theorem, new and old.
|-
|-
| March 18, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dGI0NjBrTkpkcElUQzU2TWVmT29zOEE6MA#gid=0 Register!] || Elaine Brow || [[#Doodling and Graph Theory | Doodling and Graph Theory]]
| Nov 11 || 3255 College Library || Chenxi Wu || Heron’s method for approximating square roots
|-
|-
| March 25, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dHZwbnZoM2xPUF90YmNfVXg3TkJzWkE6MA#gid=0 Register!] || Spring Break || No Meeting
| Nov 18 || 3255 College Library || Diego Rojas || Non-Transitive Dice: The Math That Doesn’t Play Fair
|-
|-
| April 1, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dHpScXdyQ2RtUUtOY3BVeE9QSVBHTlE6MA#gid=0 Register!] || Uri Andrews || [[#A Mathematician's April Fools | A Mathematician's April Fools]]
| Nov 25 || 3255 College Library || Kaiyi Huang || A geometric investigation into a space shuttle failure
|-
|-
| April 8, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dE1LWUZXT2JuVVkzZ3FNa2xUMWJKSHc6MA#gid=0 Register!] || Daniel Ross || [[#String puzzles | String puzzles]]
| Dec 2 || 3255 College Library || TBA || TBA
|-
|-
| April 15, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dDdQcnE0aGdPQm94RGlUeTZFOWtJSVE6MA#gid=0 Register!] || Silas Johnson || [[#How to Win (or not) at Tic-Tac-Toe | How to Win (or not) at Tic-Tac-Toe]]
| Dec 9 || 3255 College Library || TBA || TBA
|-
|-
| April 22, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dFV6TlItZXZMMGg0YkdPZVE1TVl5U1E6MA#gid=0 Register!] || Lalit Jain || [[#Playing with Zomes | Playing with Zomes]]
| Dec 16 || 3255 College Library || TBA || TBA
|-
|-
| April 29, 2013 [https://docs.google.com/a/wisc.edu/spreadsheet/viewform?formkey=dHpaQlFrYnE4TVRZS0tkWG5ONzRYbVE6MA#gid=0 Register!] || TBA || [[#TBA | TBA]] 
|}
|}


</center>
</center>


===Infinitely Often===
= Fall Abstracts =


<span style="background:#00FF00">February 4th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
=== Abstract 10/7 ===
<center>
{| style="color:black; font-size:100%" table border="2" cellpadding="10" width="700" cellspacing="20"
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Caitlin Davis'''
|-
| bgcolor="#BDBDBD"  align="center" | '''Title: How to Cut a Cake (Fairly)'''
|-
| bgcolor="#BDBDBD"  | 
Imagine you and a friend are sharing a cupcake.  How can you cut the cupcake so that each of you gets your fair share?  If you've ever shared a cupcake (or some other treat) with a friend, you might have an answer!  Now what if you're sharing a cake with several friends?  Can we use the same strategy to cut the cake fairly? We'll talk about how math can be used to study questions like this.
|}                                                                       
</center>


''' Infinitely Often'''
=== Abstract 10/14 ===
<center>
{| style="color:black; font-size:100%" table border="2" cellpadding="10" width="700" cellspacing="20"
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Uri Andrews'''
|-
| bgcolor="#BDBDBD"  align="center" | '''Title: Math, Philosophy, Psychology, and Artificial Intelligence'''
|-
| bgcolor="#BDBDBD"  | 
People come to understand the truth via a process of arguing. This could be a philosophical debate. This could be an internal dialogue. This could be in a courtroom. This could be deciding with your family where to go for dinner. These are all different forms of argumentation, with different rules for when you are convinced. In a courtroom, you have to be convinced beyond a reasonable doubt, whereas when deciding where to go for dinner, you might just have to look hungriest to win. These processes can be mathematically modeled. Moreover, this is important for the modern goal of teaching a computer how to think and how to understand human reasoning (Artificial Intelligence).
|}                                                                       
</center>


So you think you can add two numbers, three number, even a lot of numbers together? Well, can you add an infinite number of numbers together?
See how thinking about infinite processes can be used to add infinite sums, evaluate repeating decimals, understand infinite continued fractions, and calculate areas and volumes. Also see what strange things can go wrong when dealing with infinity.


===Making taffy with the Golden mean===
=== Abstract 10/21 ===
<center>
{| style="color:black; font-size:100%" table border="2" cellpadding="10" width="700" cellspacing="20"
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Sam Craig'''
|-
| bgcolor="#BDBDBD"  align="center" | '''Title: Fractal geometry and the problem of measuring coastlines'''
|-
| bgcolor="#BDBDBD"  | 
A fractal is a shape which looks about the same when you look closely as when you look far away. I will show some examples of fractals that arise in math (like the Sierpinski triangle) and in nature (like the coastline of an island) and discuss the difficulties in determining what the length of a fractal means.
|}                                                                       
</center>


<span style="background:#00FF00">February 11th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
=== Abstract 11/4 ===
<center>
{| style="color:black; font-size:100%" border="2" cellpadding="10" width="700" cellspacing="20" table
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Sam Craig'''
|-
| bgcolor="#BDBDBD" align="center" | '''Title: Proofs of the Pythagorean theorem, new and old.'''
|-
| bgcolor="#BDBDBD" |
The Pythagorean theorem has been known for thousands of years and over that time, people have found a number of different ways to prove the theorem. We will talk about a proof given by Pythagoras, a proof by US President Andrew Garfield, and a very recent proof (that you might have heard of in the news) by Calcea Johnson and Ne'Kiya Jackson.
|}
</center>


''' Making taffy with the Golden mean'''
=== Abstract 11/11 ===
<center>
{| style="color:black; font-size:100%" border="2" cellpadding="10" width="700" cellspacing="20" table
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Chenxi Wu'''
|-
| bgcolor="#BDBDBD" align="center" | '''Title:Heron’s method for approximating square roots.'''
|-
| bgcolor="#BDBDBD" |
We will talk about Heron's method for approximating square roots. This will lead us on a journey through approximation methods including Newton's method, through algebraic concepts like the p-adic numbers, and Hensel's Lemma.
|}
</center>


Taffy pullers are devices used to make candy or bread. They are very
=== Abstract 11/18 ===
interesting mathematically: we can relate the number of folds of dough
<center>
to some famous mathematical sequences. Some surprising numbers pop
{| style="color:black; font-size:100%" border="2" cellpadding="10" width="700" cellspacing="20" table
up, like the Golden mean but also its lesser-known cousins. We can
|-
use this knowledge to improve existing devices. (Warning: no actual
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Diego Rojas'''
taffy will be made. Sorry.)
|-
| bgcolor="#BDBDBD" align="center" | '''Title:Non-Transitive Dice: The Math That Doesn’t Play Fair.'''
|-
| bgcolor="#BDBDBD" |
What if I told you there’s a set of dice where winning doesn’t follow the rules you expect? In this talk, we’ll explore the strange and surprising world of non-transitive dice, where the usual logic of “if A is better than B, and B is better than C, then A must be better than C” simply falls apart. Using math, probability, and a little imagination, we’ll uncover why these dice defy intuition and how they challenge our understanding of competition and strategy. Get ready to think about games—and math—in a whole new way!
|}
</center>


===Guarding an Art Gallery===


<span style="background:#00FF00">February 18th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
=== Abstract 11/25 ===
<center>
{| style="color:black; font-size:100%" border="2" cellpadding="10" width="700" cellspacing="20" table
|-
| bgcolor="#e8b2b2" align="center" style="font-size:125%" | '''Kaiyi Huang'''
|-
| bgcolor="#BDBDBD" align="center" | '''Title:A geometric investigation into a space shuttle failure'''
|-
| bgcolor="#BDBDBD" |
We know that a circle has the same width in every direction, but is it the only object that has this property? NASA engineers assumed so, which, together with a string of other mistakes, might have led to the tragic failure of their space shuttle launch. Let’s look further into this problem so that we won’t make the same mistake again!
|}
</center>


'''Guarding an Art Gallery'''
==Directions and parking==


How many guards does it take to guard an art gallery so that every spot in the gallery can be seen by at least one guard?  We will explore this question and find an upper bound on the number of necessary guards based only on the number of walls in the gallery.
Our meetings are held on the 3rd floor of Helen C. White Hall in room 3255.


===The Coming of Enigma===
<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">
[[File: Helencwhitemap.png|400px]]</div>


<span style="background:#00FF00">Special Public Lecture:  Wednesday, February 27th, 2013, '''5pm''', Van Vleck Hall room '''B239''', UW-Madison campus</span>
'''Parking.''' Parking on campus is rather limited.  Here is as list of some options:


The Enigma machine was a cryptodevice used by the Germans before and during
*There is a parking garage in the basement of Helen C. White, with an hourly rate.  Enter from Park Street.
World War II and was considered to provide unbreakable security. This
*A 0.5 mile walk to Helen C. White Hall via [http://goo.gl/cxTzJY these directions], many spots ('''free starting 4:30pm''') [http://goo.gl/maps/Gkx1C in Lot 26 along Observatory Drive].
belief was founded on very solid principles which will be outlined in this
*A 0.3 mile walk to Helen C. White Hall via [http://goo.gl/yMJIRd these directions], many spots ('''free starting 4:30pm''') [http://goo.gl/maps/vs17X in Lot 34].   
talk.  Taking a two-millennia tour through the history of cryptology, we
*A 0.3 mile walk to Helen C. White Hall via [http://goo.gl/yMJIRd these directions], 2 metered spots (25 minute max) [http://goo.gl/maps/ukTcu in front of Lathrop Hall].
will come to understand the design principles that went into the Enigma and
*A 0.2 mile walk to Helen C. White Hall via [http://goo.gl/b8pdk2 these directions] 6 metered spots (25 minute max) around [http://goo.gl/maps/6EAnc the loop in front of Chadbourne Hall] .
understand how it worked and how it was used. We will also touch on how
*For more information, see the [http://transportation.wisc.edu/parking/parking.aspx UW-Madison Parking Info website].
espionage, treason, and sibling rivalry provided Polish mathematicians the
necessary ingredients to break the unbreakable. This talk is geared towards
the general public, with no specific expertise in mathematics assumed.


===Origami===
==Email list==
The best way to keep up to date with the what is going is by signing up for our email list. Please add your email in the form:
[https://docs.google.com/forms/d/e/1FAIpQLSe_cKMfdjMQlmJc9uZg5bZ-sjKZ2q5SV9wLb1gSddrvB1Tk1A/viewform '''Join Email List''']


<span style="background:#00FF00">February 25th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
==Contact the organizers==
The Madison Math Circle is organized by a group of professors and graduate students from the [http://www.math.wisc.edu Department of Mathematics] at the UW-Madison. If you have any questions, suggestions for topics, or so on, just email the '''organizers''' [mailto:mathcircleorganizers@g-groups.wisc.edu here]. We are always interested in feedback!
<center>
<gallery widths="500" heights="300" mode="packed">
File:Uri.jpg|[https://www.math.wisc.edu/~andrews/ Prof. Uri Andrews]
</gallery>


Origami is the art of folding paper, and it involves some cool math, too.  Come to find out more!
<gallery widths="500" heights="250" mode="packed">
 
</gallery>
===The Game of Nim===
</center>


<span style="background:#00FF00">March 4th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
==Donations==
Please consider donating to the Madison Math Circle. Our main costs consist of pizza and occasional supplies for the speakers.  So far our costs have been covered by donations from the UW Mathematics Department as well as a generous gifts from private donors. The easiest way to donate is to go to the link:


Nim is a two-player game wherein the players alternate taking one or more stones from a pile (there are two or more piles at the beginning). The player who takes the last stone wins. We will spend most of the time playing and trying to come up with winning strategies. At the end, we will talk a little about the history a general strategy to win the game. 
[http://www.math.wisc.edu/donate Online Donation Link]


=== Pythagorean Triples: A Personal Interview ===
There are instructions on that page for donating to the Math Department.  <b> Be sure and add a Gift Note saying that the donation is intended for the "Madison Math Circle"!</b>  The money goes into the Mathematics Department Annual Fund and is routed through the University of Wisconsin Foundation, which is convenient for record-keeping, etc.


<span style="background:#00FF00">March 11th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
Alternately, you can bring a check to one of the Math Circle Meetings.  If you write a check, be sure to make it payable to the "WFAA" and add the note "Math Circle Donation" on the check. 


We all know the Pythagorean theorem from geometry, which tells us the relationship between the side lengths of any right triangle: a^2 + b^2 = c^2, where c is the length of the hypotenuse.  Sometimes we are very lucky, when a, b, and c are natural numbers such as 3, 4, and 5.  That is called a Pythagorean triple.  We're going take a close look at these characters and figure out a few of their less-than-obvious traits.
Or you can make donations in cash, and we'll give you a receipt.


=== Doodling and Graph Theory ===
==Help us grow!==
If you like Math Circle, please help us continue to grow!  Students, parents, and teachers can help by:
* Like our [https://facebook.com/madisonmathcircle '''Facebook Page'''] and share our events with others!
* Posting our [https://www.math.wisc.edu/wiki/images/Math_Circle_Flyer_2021.pdf '''flyer'''] at schools or anywhere that might have interested students.
* Discussing the Math Circle with students, parents, teachers, administrators, and others.
* Making an announcement about Math Circle at PTO meetings.
* Donating to Math Circle.
Contact the organizers if you have questions or your own ideas about how to help out.


<span style="background:#00FF00">March 18th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
=Useful Resources=


Some of the pencil-and-paper games we play in notebook margins use more math than meets the eye. We'll try out a few fun and simple doodling puzzles, and see how they translate to some basic questions in graph theory. Then we'll harness our new theory to find quick solutions to whole groups of puzzles.


=== A Mathematician's April Fools ===


<span style="background:#00FF00">April 1st, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
== Archived Abstracts ==


A paradox is a seemingly logically valid argument that leads to absurd conclusions. Mathematicians are always very careful to avoid accidentally using one, but they can be useful and fun to play with.
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2023-2024 2023 - 2024 Abstracts]


[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2022-2023 2022 - 2023 Abstracts]


=== String puzzles ===
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2021-2022 2021 - 2022 Abstracts]


<span style="background:#00FF00">April 8th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2020-2021 2020 - 2021 Abstracts]


They may be familiar from novelty shops or even your mantlepiece--a bit of string wound around and through some configuration of objects, asking you to accomplish some apparently impossible rearrangement or removal. Part of their difficulty comes from hopelessly infinite array of available moves--do you perhaps tie a clever knot here?  Maybe pass a bight through there?  We'll look at a few examples and see how to distill them to something more manageable, and even turn some into puzzles that can be solved instead only on paper (no drawing skills required).
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2019-2020 2019 - 2020 Abstracts]


=== How to Win (or not) at Tic-Tac-Toe ===
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_2016-2017 2016 - 2017 Math Circle Page]


<span style="background:#00FF00">April 15th, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2016-2017 2016 - 2017 Abstracts]


[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_2015-2016 2015 - 2016 Math Circle Page]


=== Playing with Zomes ===
[https://www.math.wisc.edu/wiki/index.php/Math_Circle_de_Madison_2015-2016 2015 - 2016 Math Circle Page (Spanish)]


<span style="background:#00FF00">April 22nd, 2013, '''6pm''', Van Vleck Hall room B231, UW-Madison campus</span>
[https://www.math.wisc.edu/wiki/index.php/Madison_Math_Circle_Abstracts_2015-2016 2015 - 2015 Abstracts]


This week we will and study the symmetric and magic of 3 dimensional shapes. Be ready to get your hands dirty and make your own stellated icosahedron!
[https://www.math.wisc.edu/wiki/index.php/Archived_Math_Circle_Material The way-back archives]


-->
==Link for presenters (in progress)==
[https://www.math.wisc.edu/wiki/index.php/Math_Circle_Presentations  Advice For Math Circle Presenters]


=== TBA ===
[http://www.geometer.org/mathcircles/ Sample Talk Ideas/Problems from Tom Davis]


'''To Be Announced:'''
[https://www.mathcircles.org/activities Sample Talks from the National Association of Math Circles]
Keep an eye out---we'll have more information soon!


==[[Archived Math Circle Material]]==
[https://epdf.pub/circle-in-a-box715623b97664e247f2118ddf7bec4bfa35437.html "Circle in a Box"]
[[Archived Math Circle Material]]

Latest revision as of 15:58, 25 November 2024

Logo.png

For the site in Spanish, visit Math Circle de Madison

What is a Math Circle?

The Madison Math Circle is a weekly series of mathematically based activities aimed at interested middle school and high school students. It is an outreach program organized by the UW Math Department. Our goal is to provide a taste of exciting ideas in math and science. In the past we've had talks about plasma and weather in outer space, video game graphics, and encryption. In the sessions, students (and parents) are often asked to explore problems on their own, with the presenter facilitating a discussion. The talks are independent of one another, so new students are welcome at any point.

The level of the audience varies quite widely, including a mix of middle school and high school students, and the speakers generally address this by considering subjects that will be interesting for a wide range of students.


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After each talk we'll have pizza provided by the Mathematics Department, and students will have an opportunity to mingle and chat with the speaker and with other participants, to ask questions about some of the topics that have been discussed, and also about college, careers in science, etc.

The Madison Math Circle was featured in Wisconsin State Journal: check it out!

All right, I want to come!

Our in person talks will be at, Monday at 6pm in 3255 Helen C White Library, during the school year. New students are welcome at any point! There is no fee and the talks are independent of one another. You can just show up any week, but we ask all participants to take a moment to register by following the link below: 

Math Circle Registration Form

All of your information is kept private, and is only used by the Madison Math Circle organizer to help run the Circle.

If you are a student, we hope you will tell other interested students about these talks, and speak with your parents or with your teacher about organizing a car pool to the UW campus. If you are a parent or a teacher, we hope you'll tell your students about these talks and organize a car pool to the UW (all talks take place in 3255 Helen C White Library, on the UW-Madison campus, right next to the Memorial Union).


Fall Schedule

Fall Schedule
Date Location and Room Speaker Title
Oct 7 3255 College Library Caitlin Davis How to Cut a Cake (Fairly)
Oct 14 3255 College Library Uri Andrews Math, Philosophy, Psychology, and Artificial Intelligence
Oct 21 3255 College Library Sam Craig Fractal geometry and the problem of measuring coastlines
Oct 28 3255 College Library Cancelled Cancelled
Nov 4 3255 College Library Sam Craig Proofs of the Pythagorean theorem, new and old.
Nov 11 3255 College Library Chenxi Wu Heron’s method for approximating square roots
Nov 18 3255 College Library Diego Rojas Non-Transitive Dice: The Math That Doesn’t Play Fair
Nov 25 3255 College Library Kaiyi Huang A geometric investigation into a space shuttle failure
Dec 2 3255 College Library TBA TBA
Dec 9 3255 College Library TBA TBA
Dec 16 3255 College Library TBA TBA

Fall Abstracts

Abstract 10/7

Caitlin Davis
Title: How to Cut a Cake (Fairly)

Imagine you and a friend are sharing a cupcake. How can you cut the cupcake so that each of you gets your fair share? If you've ever shared a cupcake (or some other treat) with a friend, you might have an answer! Now what if you're sharing a cake with several friends? Can we use the same strategy to cut the cake fairly? We'll talk about how math can be used to study questions like this.

Abstract 10/14

Uri Andrews
Title: Math, Philosophy, Psychology, and Artificial Intelligence

People come to understand the truth via a process of arguing. This could be a philosophical debate. This could be an internal dialogue. This could be in a courtroom. This could be deciding with your family where to go for dinner. These are all different forms of argumentation, with different rules for when you are convinced. In a courtroom, you have to be convinced beyond a reasonable doubt, whereas when deciding where to go for dinner, you might just have to look hungriest to win. These processes can be mathematically modeled. Moreover, this is important for the modern goal of teaching a computer how to think and how to understand human reasoning (Artificial Intelligence).


Abstract 10/21

Sam Craig
Title: Fractal geometry and the problem of measuring coastlines

A fractal is a shape which looks about the same when you look closely as when you look far away. I will show some examples of fractals that arise in math (like the Sierpinski triangle) and in nature (like the coastline of an island) and discuss the difficulties in determining what the length of a fractal means.

Abstract 11/4

Sam Craig
Title: Proofs of the Pythagorean theorem, new and old.

The Pythagorean theorem has been known for thousands of years and over that time, people have found a number of different ways to prove the theorem. We will talk about a proof given by Pythagoras, a proof by US President Andrew Garfield, and a very recent proof (that you might have heard of in the news) by Calcea Johnson and Ne'Kiya Jackson.

Abstract 11/11

Chenxi Wu
Title:Heron’s method for approximating square roots.

We will talk about Heron's method for approximating square roots. This will lead us on a journey through approximation methods including Newton's method, through algebraic concepts like the p-adic numbers, and Hensel's Lemma.

Abstract 11/18

Diego Rojas
Title:Non-Transitive Dice: The Math That Doesn’t Play Fair.

What if I told you there’s a set of dice where winning doesn’t follow the rules you expect? In this talk, we’ll explore the strange and surprising world of non-transitive dice, where the usual logic of “if A is better than B, and B is better than C, then A must be better than C” simply falls apart. Using math, probability, and a little imagination, we’ll uncover why these dice defy intuition and how they challenge our understanding of competition and strategy. Get ready to think about games—and math—in a whole new way!


Abstract 11/25

Kaiyi Huang
Title:A geometric investigation into a space shuttle failure

We know that a circle has the same width in every direction, but is it the only object that has this property? NASA engineers assumed so, which, together with a string of other mistakes, might have led to the tragic failure of their space shuttle launch. Let’s look further into this problem so that we won’t make the same mistake again!

Directions and parking

Our meetings are held on the 3rd floor of Helen C. White Hall in room 3255.

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Parking. Parking on campus is rather limited. Here is as list of some options:

Email list

The best way to keep up to date with the what is going is by signing up for our email list. Please add your email in the form: Join Email List

Contact the organizers

The Madison Math Circle is organized by a group of professors and graduate students from the Department of Mathematics at the UW-Madison. If you have any questions, suggestions for topics, or so on, just email the organizers here. We are always interested in feedback!

Donations

Please consider donating to the Madison Math Circle. Our main costs consist of pizza and occasional supplies for the speakers. So far our costs have been covered by donations from the UW Mathematics Department as well as a generous gifts from private donors. The easiest way to donate is to go to the link:

Online Donation Link

There are instructions on that page for donating to the Math Department. Be sure and add a Gift Note saying that the donation is intended for the "Madison Math Circle"! The money goes into the Mathematics Department Annual Fund and is routed through the University of Wisconsin Foundation, which is convenient for record-keeping, etc.

Alternately, you can bring a check to one of the Math Circle Meetings. If you write a check, be sure to make it payable to the "WFAA" and add the note "Math Circle Donation" on the check.

Or you can make donations in cash, and we'll give you a receipt.

Help us grow!

If you like Math Circle, please help us continue to grow! Students, parents, and teachers can help by:

  • Like our Facebook Page and share our events with others!
  • Posting our flyer at schools or anywhere that might have interested students.
  • Discussing the Math Circle with students, parents, teachers, administrators, and others.
  • Making an announcement about Math Circle at PTO meetings.
  • Donating to Math Circle.

Contact the organizers if you have questions or your own ideas about how to help out.

Useful Resources

Archived Abstracts

2023 - 2024 Abstracts

2022 - 2023 Abstracts

2021 - 2022 Abstracts

2020 - 2021 Abstracts

2019 - 2020 Abstracts

2016 - 2017 Math Circle Page

2016 - 2017 Abstracts

2015 - 2016 Math Circle Page

2015 - 2016 Math Circle Page (Spanish)

2015 - 2015 Abstracts

The way-back archives

Link for presenters (in progress)

Advice For Math Circle Presenters

Sample Talk Ideas/Problems from Tom Davis

Sample Talks from the National Association of Math Circles

"Circle in a Box"

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