Math 240 Fall , '06
Introduction to Mathematical Thought 
Assignments


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TEXTS:  The Keys to Advanced Mathematics : Recurrent Themes in Abstract Reasoning by Daniel Solow ( Paperback,  Books Unlimited,1995 )
Proof in Geometry by  A. I. Fetisov (Out of Print- Bookstore Reprint, D. C. Heath, Boston, 1963).

Assignments - (subject to change)
Problems are due on the class day for which they are listed.
All assignments are tentative until assigned a PS#.
Show all work and explain your reasoning
Late homework is not accepted after 5 pm of the due day.
DS = The Keys to Advanced Mathematics; F =Proof in Geometry
Week Monday Wednesday Friday
1 8-21
Topic: Introduction and  general remarks.
8-23 Read :Polya: Summary on Problem Solving
DS:1.1 
Introduction to Sets
Representation of Set
Basics(Equality, Subset, Etc)
Optional on-line exercises 1
PS#1.Problems:DS 1.1,3,4,5
8-25 Topic: Sets and set operations. 
Read: Another Polya Summary
Set Operations
Optional on-line exercises 2
DS:1.2,1.3; 3.1-3.1.2 
Do: PS#2.DS:1.7,1.9-1.14 
2.
8-28
Topic: Sets and set inclusion. Begin conditional statements.
Properties of Set Operation
 
Read: DS:1.4,1.5 
8-30 Topic: More on sets.What is a proof? 
Read : DS:1.6-1.6.2; 3.1.3, 3.1.4

 
9-1 Read :
Polya: Notation  [new]
Polya: Definition  [new]

DS:1.6-1.6.2 
Do
:Proof w/o Words #1.
Do: PS #3. DS:1.15,1.17,1.18,1.21,1.22;3.1-3.4
3 9-4 Labor Day NO CLASS.
9-6 Truth Tables, Conditional statements  and Universal Quantifiers Connected to Set definitions of Inclusion and Equality.
Read : DS: 1.6-1.6.2; 1.6.4 
9-8
Read DS: Problem1.27 sol'n,
Read : DS: 1.6-1.6.2; 1.6.4
Do: PS #4. DS: 1.25,1.27, 1.28,1.35
Do Proof Evaluation #1
4
9-11
Read : Properties of Set Operation (PSO)
DS:3.1
9-13 Read :
DS: 1.6.3, 1.6.4
Do:PS #5 DS: 3.9,3.11, 3.12 plus
(PSO): Write proofs in English (no logic symbols-only set theory notation) for #7 . [Changed sept. 11]
9-15  "The Proof"
Write 4 questions based on "the proof.".
5 9-18
Read: 
DS: 1.6.3,1.6.4 (again!)
3.1.4(cartesian Product) 
DO:Proof w/o Words #2
9-20  Read: 
D.S:1.6.7 
Problems: 
PS #6 DS: 1.29, 1.30, 1.32
9-22Read: 
DS: 1.6.8, 1.6.9
PS#7 DS: 3.7 a, 3.8a
Proof Evaluation #2
9-25 Read: DS: 1.6.8, 1.6.9, 1.6.10
PS #8 DS: 1.36, 1.37, 1.43


9-27 Read:  DS: 3.2.1  

Resubmit 3.12 and
(PSO) #7 : Write proofs in English (no logic symbols-only set theory notation).
also 1.32  
9- 29Read:  DS: 3.2.1 
Polya:Working Backwards ; Reductio... [on Moodle]
Proof w/o Words #3.
PS #9 : 3.13,3.17 (a,b)
7
10-2 Read 2.1.1,1.6.10(negation)
Quiz #1 on -line Moodle
10-4 :3.2.3
10-6
Read: 3.2.3, 1.6.10

Polya: Problems to find...prove  [on Moodle]
PS #10:DS:1.45-1.48 
Proof Evaluation #3
8 Exam #1: Thursday 10-12. Covers work through PS #11.
10-9  Read:3.1.3; 3.2.3, pp 161-166
Quiz # 2 on-line Moodle
10-11 Read:1.6.12(uniqueness)
PS#11- [Download .pdf]

10-13
Proof w/o Words #4.
9
10 -16
Read DS: 1.6.12; 3.2.2  plus pp 166-171
PS #12. 3.25, 3.26
10-18
Read DS: 1.6.12
Much about functions.
Optional On-line Exercises (1-5 only)
PS#13- [Download .pdf]

10-20
Proof Evaluation #4
Below this line is not yet assigned!

 , 1.50
Do:
DS:3.25, 3.26
Problems: DS:3.2.3 
DO:  

Do: Proof Evaluation #5 
Proof w/o Words #5.
9- 6 Read: SOS: 1.9; sp 1.29 
DS:1.6.10, 1.6.12 
DO:Proof w/o Words #6. 
DS: 1.43,.1.44, 1.50 


 Read: DS:2.2.1 
DO: DS:2.7,2.8,2.9,2.10
 Read 

DS: pages 118-121 
 Do:
 
Polya: "The intelligent problem solver" and "The intelligent reader." Polya:

Decomposing and recombining. Polya: Can you check the result? Can you derive the result differently? Polya:Signs of progress
10-16 Equivalence relations  10-18 Equivalence relations and Partitions: Integer Congruence 
Read 


DS: pages121-123, 5.1.3 
DO:
DS: 5.2 
Proof Evaluation #6
10-20
cardinal equivalence 
Read 
DO: 

10 10-23 More on congruence classes 
Countable and uncountable sets. 
Read 

DS:6.2.4 (this should cover several classes) 
DO: 

10-25Arithmetic and congruence I 
Read: 

Do:DS:6.11 

Proof Evaluation #7
10-27Read: 

Do:
11 10-30Read: 

DO: 

11-1  Read
DO :2.78,2.82
11-3 Read DS:5.1.1;5.1.2; 5.1.4 
Do:DS:5.1 

12 Exam #2
11-6  Read 

Do: 
11-8Review for Exam #2 
Proof Evaluation #8
11-10 No Class  Holiday
13 11-13Read: 
DS: 1.6.5 (Induction) 

Do:
DS:1.33(b); 1.34(b)
11-15  Read: 

DO 
11-17  Read DS: 5.2.1
14 Fall Break
11-20 11-22 11-24
15Final Part I distributed  11-27 READ 
DS:p311-312(Symmetry Groups) 
handout on Pigeons&Counting 
DO: handout:10.1,10.2 
11-29 READHandout on Pidgeon Hole Principle 
Do:DS:5.15, 5.16 
12-1 Read: 
DO: Proof Evaluation  #9
Problems on Induction
Distribute Final I
16 
Last week of classes
12-4 Read: Handout on graphs, combinations.
DO: 4 induction problems on sheet
12-6 Read:

DO:

12-8
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