Chengjiang Long 龙成江[CV]

Ph.D., Research Scientist
Meta Reality Labs (formerly Facebook Reality Labs)
322 Airport Blvd
Burlingame, CA 94010

Email: cjfykx AT


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ICSI-521: Discrete Math with Applications

Term: 2019 Spring 
Dr. Chengjiang Long
Office Hour
: Wed 12:45 PM – 3:45 PM at UAB 412E (by appointment).
Teaching Assistant
: Oguz Aranay ( and Tuan N Tran (
Student Assistant
: Shon Bangale (
TA Office Hour
: Wed 9:30 AM – 11:00 AM at UAB 401.
Lecture Time:
Thursday, 2:45 PM – 5:35 PM
Lecture Building/Room: Lecture Center 3B, University at Albany, SUNY. 
Course Website

Course Overview:
The course is to introduce students to the techniques that may be used and enhanced later in professions related to Computer Science. Computer Science specialists could choose a career of developer, analyst, manager, etc. It is important for all of them to understand or to create formal (most often mathematical) description of the problem to be solved. This course covers a wide range of different aspects of discrete mathematics that are applicable to solving programming problems: proofs by induction; mathematical reasoning, propositions, predicates and quantifiers; sets; relations, graphs, and trees; functions; counting, permutations and combinations

Students should have a fundamental understanding of mathematical reasoning as well as be competent in solving applied algebra problems. The most important prerequisites are interest in the subject, willingness to dedicate necessary resources in terms of time and intellectual effort, and willingness to actively participate in the learning process. Programming skills are required to pass the course.  

Text Books:
Kenneth Rosen, “ Discrete Mathematics and Its Applications”, 7-th Edition, Mc Graw Hill, 2012. 

The students will be graded based on course/discussion participation (5%), homework assignments (50%), one midterm exam (15%), one final project (30%). 

Extra points: 20% for each homework. Note that this is optional, the purposes of this design is to encourage the self-motivated students to challenge themselves and give them more chances to get a higher score.  

Attendance bounus: I would like to give the bonus to reward those students whose attendance is less than 3. For those who never miss any class, I will give them 5 extra points on the final grade. For those who miss only 1 class, I will give them 2 extra points. And for those who miss 2 classes, I will give them 1 extra point on the final grade.  

Final grade: A(>=92), A-(>=90), B+(>=87), B(>=82), B-(>=80), C+(>=77), C(>=72), C-(>=70), D+(>=67), D(>=62), D-(>=60) and F(<60).  

Late submission policy:
Exponential penalty -- late for one day loses 25%, two days loses 50%, and so on and so forth. 


  • Introduction to Discrete Structures.
  • Logic Inference, Predicates, Qualifiers.
  • Boolean Algebra, Logic Gates, Logic Minimization.
  • Sets, Functions, Sequences, Sums, Matrices, Matrix Algebra.
  • Algorithms, Searching, Sorting, Complexity of Algorithms.
  • Number Theory, Cryptography, Modular Arithmetic.
  • Induction and Recursion.
  • Counting.
  • Relations.
  • Graphs.
  • Trees.

Course schedule:

11/24/2019Introduction, Logic and Proofs Ch 1Lecture_1
21/31/2019Induction I and IICh 5Homework_1Lecture_2
32/7/2019Basic Structures: Sets, Function, Sequences etc.Ch 2Lecture_3
42/14/2019Algorithm, Growth Function and Complexity, and Integer Division Ch 3Homework_2Lecture_4
52/21/2019Number TheoryCh 4Lecture_5
62/28/2019Cryptograph and Basics of CountingCh 6Homework_3Lecture_6
73/7/2019CountingCh 7Lecture_7
83/14/2019Probability and ApplicationsCh 7Homework_4Lecture_8
3/21/2019Class Suspended -- Spring Break
93/28/2019Advanced Counting TechniquesCh 8Homework_5Lecture_9
104/4/2019RelationsCh 9Lecture_10
114/11/2019Midterm ExamCh 1-9Midterm_Exam
124/18/2019Graph ThoeryCh 10Lecture_11
134/25/2019Trees Ch 11Lecture_12
145/2/2019Final Project PresentationLecture_13

Note: The above course schedule may be subject to change. Please do check the latest update.

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© By Chengjiang Long since Mar 21, 2012.