Semester 3 : Notes : Discrete Mathematical Structures

Module 1:- Fundamentals of Logic

Syllabus
  • Mathematical logic - Basic connectives and truth table, Statements, Logical Connectives, Tautology, Contradiction
  • Logical Equivalence - The Laws of Logic, The Principle of duality, Substitution Rules. The implication - The Contrapositive, The Converse,The Inverse
  • Logical Implication - Rules of Inference
  • The use of Quantifiers - Open Statement
  • Logically Equivalent - Contrapositive, Converse, Inverse
  • Logical equivalences and implications for quantified statement, Implications, Negation

Module 2:- Fundamentals of Counting Theory

Syllabus
  • The Rule of Sum – Extension of Sum Rule
  • The Rule of Product - Extension of Product Rule
  • Permutations
  • Combinations
  • The Binomial Theorem (without proof)
  • Combination with Repetition
  • The Pigeon hole Principle
  • The Principle of Inclusion and Exclusion Theorem (Without Proof) - Generalization of the Principle
  • Derangements

Module 3:- Relations and Functions

Syllabus
  • Cartesian Product - Binary Relation
  • Function – domain, range-one to one function, Image- restriction
  • Properties of Relations- Reachability Relations, Reflexive Relations, Symmetric Relations, Transitive relations, Anti-symmetric Relations, Partial Order relations, Equivalence Relations, Irreflexive relations
  • Partially ordered Set – Hasse Diagram, Maximal-Minimal Element, Least upper bound (lub), Greatest Lower bound(glb) (Topological sorting Algorithm- excluded)
  • Equivalence Relations
  • Partitions - Equivalence Class
  • Lattice - Dual Lattice, Sub lattice, Properties of glb and lub, Properties of Lattice, Special Lattice, Complete Lattice, Bounded Lattice, Completed Lattice, Distributive Lattice

Module 4:- Generating Functions and Recurrence Relations

Syllabus
  • Generating Function - Definition and Examples, Calculation techniques, Exponential generating function
  • First-order linear recurrence relations with constant coefficients - homogeneous, non-homogeneous Solution
  • Second-order linear recurrence relations with constant coefficients, homogeneous, non-homogeneous Solution

Module 5:- Algebraic Structures

Syllabus
  • Algebraic system-properties- Homomorphism and Isomorphism
  • Semigroup and monoid - cyclic monoid, sub semigroup and sub monoid, Homomorphism and Isomorphism of Semigroup and monoids
  • Group- Elementary properties, subgroup, the symmetric group on three symbols, The direct product of two groups, Group Homomorphism, Isomorphism of groups, Cyclicgroup
  • Rightcosets - Leftcosets
  • Lagrange's Theorem