Title:  Theoretical Computer Science 

Code:  TINe 

Ac.Year:  2017/2018 

Term:  Summer 

Language of Instruction:  English 

Credits:  5 

Completion:  credit+exam (written&verbal) 

Type of instruction:  Hour/sem  Lectures  Seminar Exercises  Laboratory Exercises  Computer Exercises  Other 

Hours:  39  0  0  0  13 

 Exams  Tests  Exercises  Laboratories  Other 

Points:  60  20  0  0  20 



Guarantor:  Češka Milan, prof. RNDr., CSc. (DITS) 

Lecturer:  Češka Milan, RNDr., Ph.D. (DITS) 
Instructor:  Češka Milan, RNDr., Ph.D. (DITS) 

Faculty:  Faculty of Information Technology BUT 

Department:  Department of Intelligent Systems FIT BUT 

 Learning objectives: 

  To acquaint students with more advanced parts of the formal language theory, with basics of the theory of computability, and with basic terms of the complexity theory.  Description: 

  An overview of the applications of the formal language theory in modern computer science and engineering (compilers, system modelling and analysis, linguistics, etc.), the modelling and decision power of formalisms, regular languages and their properties, minimalization of finitestate automata, contextfree languages and their properties, Turing machines, properties of recursively enumerable and recursive languages, computable functions, undecidability, undecidable problems of the formal language theory.  Knowledge and skills required for the course: 

  Basic knowledge of discrete mathematics concepts including graph theory and formal languages concepts, and basic concepts of algorithmic complexity.  Subject specific learning outcomes and competences: 

  The students are acquainted with basic as well as more advanced terms, approaches, and results of the theory of automata and formal languages and with basics of the theory of computability and complexity allowing them to better understand the nature of the various ways of describing and implementing computeraided systems. The students are capable of applying the acquainted knowledge when solving complex theoretical as well as practical problems in the areas of system modelling, programming, formal specification and verification, and artificial intelligence.
 Generic learning outcomes and competences: 

  The students acquire basic capabilities for theoretical research activities.  Syllabus of lectures: 


 An overview of the applications of the formal language theory, the modelling and decision power of formalisms, operations over languages.
 Regular languages and their properties, Kleene's theorem, Nerod's theorem, Pumping lemma.
 Minimalization of finitestate automata, the relation of indistinguishability of automata states, construction of a reduced finitestate automaton.
 Closure properties of regular languages, regular languages as a Boolean algebra, decidable problems of regular languages.
 Contextfree languages and their properties, normal forms of contextfree grammars, unambiguous and deterministic contextfree languages, Pumping lemma for contextfree languages.
 Closure properties of contextfree languages, closedness wrt. substitution and its consequences, decidable problems of contextfree languages.
 Turing machines (TMs), the language accepted by a TM, recursively enumerable and recursive languages and problems, TMs and functions, methods of constructing TMs.
 Modifications of TMs, TMs with a tape infinite on both sides, with more tapes, nondeterministic TMs, automata with two pushdown stacks, automata with counters.
 TMs and type0 languages, diagonalisation, properties of recursively enumerable and recursive languages, linearly bounded automata and type1 languages.
 Computable functions, initial functions, primitive recursive functions, murecursive functions, the relation of TMs and computable functions.
 The ChurchTuring thesis, universal TMs, undecidability, the halting problem, reductions, the Post's correspondence problem.
 Undecidable problems of the formal language theory.
 An introduction to the computational complexity, Turing complexity, the P and NP classes and beyond.
 Syllabus  others, projects and individual work of students: 


 A homework on regular languages and finitestate automata.
 A homework on contextfree languages.
 A homework on Turing machines.
 A homework on computable functions.
 Fundamental literature: 


 Kozen, D.C.: Automata and Computability, SpringerVerlag, New Yourk, Inc, 1997. ISBN 0387949070
 Hopcroft, J.E., Motwani, R., Ullman, J.D.: Introduction to Automata Theory, Languages, and Computation, Addison Wesley, 2nd ed., 2000. ISBN 0201441241
 Martin, J.C.: Introduction to Languages and the Theory of Computation, McGrawHill, Inc., 3rd ed., 2002. ISBN 0072322004
 Brookshear, J.G. : Theory of Computation: Formal Languages, Automata, and Complexity, The Benjamin/Cummings Publishing Company, Inc, Redwood City, California, 1989. ISBN 0805301437
 Aho, A.V., Ullmann, J.D.: The Theory of Parsing,Translation and Compiling, PrenticeHall, 1972. ISBN 0139145648
 Study literature: 


 Kozen, D.C.: Automata and Computability, SpringerVerlag, New Yourk, Inc, 1997. ISBN 0387949070
 Hopcroft, J.E., Motwani, R., Ullman, J.D.: Introduction to Automata Theory, Languages, and Computation, Addison Wesley, 2nd ed., 2000. ISBN 0201441241
 Controlled instruction: 

  A written midterm exam, a regular evaluation of homeworks.
 Progress assessment: 

  A midterm exam evaluation (max. 20 points) and an evaluation of homeworks (max 20 points).  Exam prerequisites: 

  The minimal total score of 15 points gained out of the first three assignements and the midterm exam (i.e. out of 35 points).  
