CMSC 250 - Discrete Structures



Class:

Discussions (MW):

Welcome to CMSC 250. This course covers fundamental mathematical concepts related to computer science, including propositional logic, first-order logic, methods of proof, elementary number theory (including sequences, and induction), set theory with finite and infinite sets, functions, relations, introductory counting and probability theory, and an introduction to graph theory. Emphasis will be on mathematical rigor and the development of sound and elegant formal proofs.

Schedule

Exam Dates:


  • Midterm #1: Tuesday, October 1st, in Lecture.
  • Midterm #2: Tuesday, November 5th, in Lecture.
  • Final Exam: Friday, December 13th, 6:30 - 8:30 PM, Location: TBA

Lectures (Tentative)


Week Starting
Tuesday
Thursday
08/26 Course Intro

Introduction to the course; What is logic?;
statements; disjunction, conjunction, negation; interpretations; truth tables; logical equivalence
Logical equivalencies; conditional connective;
09/02 Conditional equivalence contd., biconditional connectives;inverse, converse, contrapositive; "sufficient" and "necessary" conditions; arguments Checking validity of arguments via truth table; rules of inference; proving arguments; logic gates; circuits; translating truth tables into statements; translating statements into circuits;
09/09 building an "addition" circuit; Predicates and domains, Universal and Existential quantifiers negating statements, Practice translating English to Predicate Logic;
09/16 free vs. bound variables; interpretations; rules of inference; empty domains,closure; Why number theory?; basic definitions, Introduction to proofs; direct; contrapositive;
09/23 contrapositive;contradiction; Equivalence proofs Midterm Review
09/30 Midterm I constructive proofs; proofs by exhaustion/cases;
10/07 Applying Universal Generalization; More proof examples; Notation for divisibility; Fundamental Theorem of Arithmetic , Applications of the Fundamental Theorem Modular Congruence, Modular Arithmetic Theorem Proof by contradiction; "famous" proofs; Modular Congruence, Modular Arithmetic Theorem
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11/04 Midterm II
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11/25 Thanksgiving break

Staff

Instructor: Mohammad Nayeem Teli (nayeem at cs.umd.edu)

Office: IRB 2224
Office Hours: W 10:00 AM - 11:00 AM


Teaching Assistants


Name Email (at umd.edu) Discussion Lead
Faraz Ghahremani Kooreh farazgh 0101
Tianfu Wang tianfuw 0102
Shwai He shwaihe 0102
Sneha Dharmesh Gathani sgathani 0103
Tal Ledeniov ledeniov 0103
Roksana Khanom rkhanom 0104
Sora Cullen-Baratloo scullenb 0105
Parsa Hossein phoseini 0105
Shuhao Tan shuhao 0106
Zain Ahmed Zarger zzarger 0106
Juzheng Zhang juzheng 0107
Nitya Raju nraju 0108


Office Hours

Instructor: W 10:00 - 11:00 AM

Teaching Assistants

Day
Office hours (IRB 1266 Open Area)
Monday Roksana: 11:00 AM - 1:00 PM
Sneha: 11:00 AM- 1:00 PM
Zain: 12:00 - 1:00 PM
Tal: 2:00 - 4:00 PM
Sora: 4:00 - 5:00 PM
Tianfu: 4:00 - 5:00 PM
Tuesday Nitya: 11:00 AM - 1:00 PM
Sora: 12:30 - 1:30 PM
Parsa: 3:30 - 5:30 PM
Sora: 4:00 - 5:00 PM
Wednesday Faraz: 9:00 - 11:00 AM
Roksana: 11:00 AM - 1:00 PM
Sneha: 11:00 AM- 1:00 PM
Zain: 12:00 - 1:00 PM
Juzheng: 2:00 - 4:00 PM
Sora: 2:00 - 3:00 PM
Shuhao: 3:00 - 5:00 PM
Tianfu: 4:00 - 5:00 PM
Thursday Shuhao: 11:00 AM - 1:00 PM
Parsa: 3:30 - 5:30 PM
Juzheng: 2:00 - 4:00 PM
Friday Faraz: 1:00 - 3:00 PM
Nitya: 1:00 - 3:00 PM
Tianfu: 2:00 - 4:00 PM

Please note that a TA may need to leave 5 minutes before the end of the hour in order to go to his/her class. Please be understanding of their schedules.

Class Resources

Handouts


Online Course Tools
  • ELMS - This is where you go to see grades on assignments and to get your class account information.
  • Gradescope - This is where you submit yout homeworks and receive feedback.


Assignments

See ELMS

*All homeworks/assignments are due at 11:59 PM on the due date.