Math 181: A Mathematical World, Spring 2016

University of Illinois at Urbana-Champaign

Class time: 2:00-2:50 MWF

Class location: 145 Altgeld

Instructor: Sarah Yeakel

Office: 169 Altgeld

Office hours: 3-3:50 MW or by appointment

Email: yeakel2(at)illinois(dot)edu

Syllabus

Topics

Weeks 1-5: Graph theory (Euler circuits, Hamiltonian circuits, chromatic number)

Weeks 6-7: Voting theory (preference ballots, properties of different methods)

Weeks 8-9: Geometry (scaling, crushing strength)

Weeks 10-11 : Tessellations (platonic solids, archimedean solids, duality)

Weeks 12-13, 15: Topology (multiplying spaces, knots, gluing diagrams, games on surfaces)

Week 14: (substitute) sizes of infinity

Required Homework

due at the beginning of class

Homework 1 Due Friday, January 22

Homework 2 Due Wednesday, January 27

Homework 3 Due Wednesday, February 3

Homework 4 Due Friday, February 12

Homework 5 Due Friday, February 26

Homework 6 Due Monday, March 7

Homework 7 Due Monday, March 16

Homework 8 Due Wednesday, April 6

Homework 9 Due Monday, April 18

Homework 10 Due Monday, April 25

Homework 11 Due Wednesday, May 4


Suggested homework

(from the book)

Chapter 1: skills check: 2, 7, 9, 11, 14, 17, 19, 20-21, 24, 29

exercises: 2-4, 7, 9, 12, 16, 23-25, 27, 28, 30, 38, 40, 42

Chapter 2: skills check: 5, 7, 13, 17, 21

exercises: 1-3, 5-6, 11, 14-17, 18b, 21, 27, 28, 30 , 39, 44a-c, 46-50, 54-55, 57, 59-61, 67-68

Chapter 3: skills check: 25, 26, 29, 30

exercises: 71-72, 76, 85-86

Chapter 9: skills check: 11, 13, 15, 19, 27

exercises: 5, 9-13, 15-20, 21a, 28, 36, 38

Chapter 18: skills check: 1-6, 10, 16, 19-20, 24

exercises: 2-5, 15-18, 32-33, 36, 41, 48

Tilings

Topology

Infinity and tic-tac-toe(notice the worksheet for May 2 has more tic-tac-toe type problems.)

Final review sheet checklist

Quizzes

Quiz 1 Jan 29 Solutions

Quiz 2 Feb 5 Solutions

Quiz 3 Feb 12 Solutions

Quiz 4 Mar 2 Solutions

Quiz 5 Mar 9 Solutions

Quiz 6 Apr 1 Solutions

Quiz 7 Apr 8 Solutions

Quiz 8 Apr 15 Solutions

Quiz 9 Apr 29 solutions

Exams

Exams are given during class, in the usual classroom, so no conflict exams will be given. Please refer to the syllabus for the policy on missed exams or quizzes.

Exam 1: Friday, February 19 blank exam solutions

Exam 2: Friday, March 18 blank exam solutions

Exam 3: Wednesday, April 20 solutions

Final Exam: Monday, May 9, 7:00PM-10:00PM in our classroom