# 470-2301/04 – Discrete Mathematics (DIM)

 Gurantor department Department of Applied Mathematics Credits 5 Subject guarantor doc. Mgr. Petr Kovář, Ph.D. Subject version guarantor doc. Mgr. Petr Kovář, Ph.D. Study level undergraduate or graduate Study language English Year of introduction 2019/2020 Year of cancellation Intended for the faculties FEI Intended for study types Bachelor
Instruction secured by
KOV16 doc. Mgr. Petr Kovář, Ph.D.
KOV74 Mgr. Tereza Kovářová, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2

### Subject aims expressed by acquired skills and competences

The goals of this subject are to introduce basic terms and methods of discrete mathematics and graph theory and to teach students to use them to formulate real life problems using mathematical terminology and to solve these related practical problems. The students should learn to - comprehend and generalize given definitions, - distinguish which theoretical approach is suitable for a particular practical problem, - classify given objects based on given properties and summarize the results, - summarize each chapter. In class students should practice to - state a real life problem in the terms of Discrete mathematics or Graph theory - apply theoretical approaches in solving real life problem, choose proper methods, - choose and compare various methods of solution and pick the most suitable, - verify the validity of each partical method, - reuse the same theoretical approach in similar problems.

### Teaching methods

Lectures
Individual consultations
Tutorials
Project work

### Summary

In this course the students learn the basic terms and concepts and basic constructions used in Discrete mathematics, especially in Combinatorics and Graph theory. The word "discrete" refers to the opposite of "continuous". In this course we deal almost exclusively with finite sets and finite objects.

### Compulsory literature:

P. Kovář: Lecture slides online http://homel.vsb.cz/~kov16/files/dim_kapitoly_all_en.pdf J.Matoušek, J.Nešetřil. Invitation to Discrete Mathematics, Oxford University Press, ISBN 0-19-850208-7.

### Recommended literature:

K.H.Rosen, Discrete Mathematics and Its Applications - 6th ed., McGraw-Hill, New York NY, (2007), ISBN-10 0-07-288008-2. P. Kovář: Lecture slides online http://homel.vsb.cz/~kov16/files/dim_kapitoly_all_en.pdf P. Kovář, T. Kovářová: Solved exercises http://homel.vsb.cz/~kov16/files/dim_solved_exercises.pdf

### Way of continuous check of knowledge in the course of semester

Quizes during the semester. Each week (starting with the third week) there will be short quizes at the beginning of each class (10 quizes, 2 or 3 points each). No books or notes are alowed to be used to write the quiz. At the end of the semester eight best quizes will be counted, four of each type. Maximum is 20 points. Topics of the quizes can be foud on the course webpage (webpage of the lecturer). The exercises on the quiz will be similar but not identical. Project. Topis will be available in the second half of the semester. A regular project consists of several problem, half in Discrete mathematics, half in Graph theory. The problems will be graded 0-2 or 0-3 point depending on difficulty, the total is 10 points. There can be bonus projects available, each with two more difficult problems (Discrete mathematics +Graph theory), every student can work on the bonus project instead of the regular project. The problems will be graded 0/3/5 points, in the case of exceptionaly good solution 10 points. Exam. A student can come for the exam oly if he passed "zápočet". Main part of the exam is a written test for approximately 75 minutes. During the written part students can use one page A4 of hand-written notes. This legalized "cheat-sheet" may contain definitions, formulas, thorems, but NO SOLVED EXAMPLES! Necessary conditions to pass "zápočet": Get at least 10 point on quizes and project. The project has to be "accepted". A project can be accepted if it fulfils all formal requirement, i.e. title page, ID, etc. A project can be accepted even if it gains no points.

### Other requirements

No additional requirements are imposed on the student.

### Prerequisities

Subject has no prerequisities.

### Co-requisities

Subject has no co-requisities.

### Subject syllabus:

Lectures and discussions: Part I - Introduction to discrete mathematics. The scope and goals of Discrete mathematics. Counting selections and arrangements, related problems. Pidgeon-hole principle. Geometric and arithmetic progressions. Inclusion-exclusion principle, binomial theorem and its applications. Discrete probability: tossing coins, random choice, shuffling cards. Probability space and random event. Integers and mathematical induction, the concept of proofs. Proving the formulas for numbers of subsets, k-combinations, k-permutations. Recurrence relations, their applications and examples. Modular arithmetics. Algorithmic aspects: practical implementation of sets and relations. Obtaining a full list of all possible subsets k-combinations, and k-permutations. Part II - Introduction to graph theory Graphs and relations. Subgraphs, isomorphism, degrees, implementation. Directed graphs. Graph connectivity, algorithms for searching. Higher degrees of connectivity, edge-connectivity. Eulerian graphs and their applications. Distance in graphs, Dijkstra's algorithm, graph metric and its enumeration. Trees and their characterizations, rooted trees, tree isomorphism. Spanning trees, MST problem. Basic algorithms for MST. Planar embeddings of graphs, Euler's formula and its applications. Graph coloring, bipartite graphs, recognition. Network flows: formulation and application to real life problems. Ford-Fulkerson's algorithm for maximum flow. Further applications to matching and system of representatives.

### Conditions for subject completion

Full-time form (validity from: 2019/2020 Winter semester, validity until: 2021/2022 Summer semester)
Min. number of points
Credit and Examination Credit and Examination 100 (100) 51
Credit Credit 30 (30) 10
Project DiM Project 10  0
Weekly Quizes Written test 20  0
Examination Examination 70  21
Mandatory attendence parzicipation: participation at all exercises is obligatory, 2 apologies are accepted participation at all lectures is expected

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### Occurrence in study plans

Academic yearProgrammeField of studySpec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2022/2023 (B0613A140010) Computer Science TZI P English Ostrava 2 Compulsory study plan
2021/2022 (B0613A140010) Computer Science TZI P English Ostrava 2 Compulsory study plan
2020/2021 (B0613A140010) Computer Science TZI P English Ostrava 2 Compulsory study plan
2019/2020 (B0613A140010) Computer Science TZI P English Ostrava 2 Compulsory study plan

### Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner
V - ECTS - bc. 2022/2023 Full-time English Optional 401 - Study Office stu. block
V - ECTS - bc. 2021/2022 Full-time English Optional 401 - Study Office stu. block
V - ECTS - bc. 2020/2021 Full-time English Optional 401 - Study Office stu. block