Computer Science 243

Discrete mathematics and Functional Programming
Fall 2017
Thomas VanDrunen



Meeting time: MWF 2:15-3:25 pm.
Meeting place: Science 131

Office hours: MWF 3:30-4:30 pm; Th 9:00-10:30 am, 11:00-11:30, and 1:15-3:15 pm.

Contact: 163 Science; 752-5692; Thomas.VanDrunen@wheaton.edu
http://cs.wheaton.edu/~tvandrun/cs243



Syllabus

ML programming guide

Modeling project

Programming assignment turn-in page.

Frequently asked questions.




Final exam: Wed, Dec 13, 10:30am


Color code:
Green: Background material---read carefully before class. I will not cover this. You are responsible to know it ahead of time.
Magenta: Core material---read before class. I will briefly review and highlight the content, but not lecture on it. Most of our time in class will be spent working on problems from this material.
Cyan: Advanced material---skim before class, read after class. Usually this will be for hard material that I do not expect you to get on a first read. Familiarize yourself with it before class; I will lecture on it
Moon's dayWoden' s dayFrigga's day

Aug 21

NO CLASS

Aug 23

Sets. Sets and elements. 1.(1 & 2)
Slides

Review 1.(1-2), read 1.(3-5)
Optional:
Video for course introduction
Video for sections 1.1-3
Video for section 1.4
Video for section 1.5

Aug 25

Set operations; visual verification (3-5)

Pg 12: 1.3.(11-14, 16)
Pg 16: 1.4.(1-6, 19)
Pg 20: 1.5.(8-11)
Read 1.6-9
Optional:
Video for section 1.6
Video for sections 1.(8 & 9)

Aug 28

Intro to ML; cardinality and Cartesian products. 1.(6-9).
Slides

Pg 26: 1.6.(1-5)
Pg 32: 1.8.(2, 4, 5)
Note that the ML problems should be submitted on paper with the rest of the assignment.
Read 1.(10&11)
Optional:
Video for sections 1.(10 & 11)
Video for sections 1.(12)

Aug 30

Making things in ML. 1.(10-13).
Code from class


Pg 36: 1.9.(3, 4, 8, 9, 10, 14, 16)
Pg 40: 1.10.(1-4)
ML problems should still be submitted on paper
Re-read 1.11 (if necessary), skim 1.(12 & 13).
Read 2.1
Skim 2.2
Optional:
Video for section 2.1
Video for Section 2.2

Sept 1

More about functions in ML. 1.(11-13); List. Introduction to lists. 2.(1 & 2)
Code from class

Pg 48: 1.11.(4, 8, 10)
Pg 50-51: 1.12.(3, 5, 8)
Starting with this assignment, submit ML problems electronically
Recommendation: start working on problems from 2.2 assigned next time
Skim 2.3
Read 2.4
Optional:
Video for Section 2.4

Sept 4

NO CLASS

Sept 6

More about lists; powersets. 2.(3 & 4)
Code from class

Pg 70: 2.1.(2-4)
Pg 74: 2.2.(2, 3, 8, 9, 11, 13, 15)
Read carefully 2.5
Skim 2.6

Sept 8

More list examples; more about powersets
Slides
Code from class

Pg 82: 2.4.(8-12, 14 & 15)
Read carefully 3.(1 & 2)
Read 3.(3 & 4)

Sept 11

Proposition. Propositional forms; boolean values; logical equivalence. 3.(1-4)
Slides
Code from class

Pg 102: 3.3.(5 & 6)
Pg 105: 3.4.(2, 4, 8-12)
Read 3.(5-7)

Sept 13

Conditionals. 3.(5-7)
Slides
Code from class

Pg 108: 3.5.(1 & 2)
Pg 114: 3.7.(1, 2, 7, 8, 9, 12, 13)
Read 3.(8 & 9)

Sept 15

Arguments. 3.(8 & 9)
Slides

Pg 119: 3.8.(3 & 5)
Pg 122: 3.9.(3-7)
Read carefully 3.(10 & 11)
Skim 3.(12 & 13)

Sept 18

Predicates; quantification. 3.(10-13)
Slides
Code from class

Pg 133: 3.12.(1 & 2)
Pg 135:3.13.(4 & 5)
Read 3.14

Sept 20

Quantification and arguments. 3.14
Slides

Pg 139: 3.14(6-9)

Sept 22

Review
Solutions to practice problems

Sept 25

TEST

Sept 27

Proof. Introduction to proofs; subset proofs. 4.(1 & 2)
Slide

Pg 158:4.2.(2-7)
Review 4.(1 & 2)
Read 4.(3 & 4)

Sept 29

Set equality proofs; set emptiness proofs. 4.(3 & 4)

Pg 160: 4.3.(3, 14, 15, 18)
Pg 161: 4.4.(5,6)
Read 4.(5-8)

Oct 2

Conditional proofs. 4.(5-8)

Pg 162: 4.5.(1, 4, 5)
Pg 164: 4.6.(2,5)
Pg 165: 4.7.(1, 6)
Review 2.4, especially Ex 2.4.15
Skim 4.9

Oct 4

Powersets. 4.9
Slides

Pg 174: 4.9.(1, 3, 4, 6)
Skim 4.(10 & 11)

Oct 6

From theorems to algorithms. 4.(10 & 11)
Code from class

Pg 177: 4.10.(3, 4, 6)
Correction to Ex 4.10.6
Read carefully 5.1
Read 5.(2 & 3)

Oct 9

Relation. Introduction. 5.(1-3)
Slides
Code from class

Practice exercises
Pg 205: 5.3.(8, 10, 12, 13)
Read 5.4
Optional:
Video for section 5.4

Oct 11

Properties of relations. 5.4

Pg 205: 5.3.(5, 11, 14)
Pg 208: 5.4.(3, 4, 5, 22, 24, 25)
Pg 212: 5.5.(7, 9, 10)
All above due Oct 20
Read 5.5

Oct 13

Equivalence relations. 5.5

See Oct 11 for assignment
Read 5.(6 & 7)

Oct 16

NO CLASS

Oct 18

NO CLASS

Oct 20

Transitive closure. 5.(6 & 7)

Pg 217: 5.6.(1&3)
Pg 222: 5.7.(3,4,5)
Read 5.(8 & 9)

Oct 23

Partial order relations; topological sort. 5.(8 & 9)

Pg 226: 5.8.(1-5)
Pg 231 5.9.(1 & 8)

Oct 25

Review

Oct 27

TEST

Oct 30

Self Reference. Recursive types. 6.(1-3)

Pg 260: 6.2.(6-8, 14-17)
Read 6.4

Nov 1

Structural induction. 6.4

Pg 268: 6.4.(3,4,6,7)
Skim 6.(5 & 6)

Nov 3

Mathematical induction. 6.(5 & 6)

Pg 273: 6.5.(2 & 4)
Pg 278: 6.6.(2 & 3).
Read 6.9 carefully
Skim 6.10

Nov 6

Loop invariants. 6.(9 & 10)

Pg 306: 6.10.(2-5). Due 4/3

Nov 8

More on loop invariants. 6.(10-11)

Read 7 intro and 7.1 carefully
Read 7.2
Skim 7.3
Practice exercises

Nov 10

Function. Introduction. 7.(1-3)

Pg 331: 7.2.(2&3)
Pg 335: 7.3.(3, 4, 8)
Read 7.4
Skim 7.5

Nov 13

Images and inverse images. Map and filter. 7.(4 & 5)

Pg 342: 7.4.(2, 5, 8, 9, 10)
Read 7.(6-8)

Nov 15

Function properties; inverse functions; composition. 7.(6-8)

Pg 346: 7.6.(2, 3, 6)
Pg 351: 7.8.(1, 5, 6)
Programming problems
Skim 7.9

Nov 17

Cardinality. 7.9

Pg 359: 7.9.(1 & 2)

Nov 20

No-credit quiz. Countability. 7.15

Nov 22

NO CLASS

Nov 24

NO CLASS

Nov 27

Review

Nov 29

TEST

Dec 1

Map and foldl; modeling functions. 7.(5 & 14)

Programming problems
Read 7.12 carefully
Skim 7.13

Dec 4

Fixed-point iteration. 7.(12 & 13)

Pg 375: 7.13.(1,3)
Skim 6.12
New version of Sec 6.12

Dec 6

Huffman encoding. 6.12

Programming problems

Dec 8

Review