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                        Chapter 9 : Relation (new)  
                        
- 9.1 What Is a Relation ? 12:36
 - 9.1 Relation On a Set 14:25
 - 9.1 Reflexive Relation 14:23
 - 9.1 What Are Symmetric And Antisymmetric Relations 11:01
 - 9.1 Examples of Symmetric and Antisymmetric 27:32
 - 9.1 What Is the Meaning of Transtive Relation? 13:36
 - 9.1 Examples of Transitive Relation 26:52
 - 9.1 Combined Relation 14:37
 - 9.1 Composite Relation and Inverse and Complement Relation 23:40
 - 9.3 Represinting Relations by Matrices 27:07
 - 9.3 Representing Relation by Digraph 25:31
 - 9.5 Equivalence Relation 33:28
 - 9.5 Equivalence Class 12:46
 - 9.5 Equivalence Class and Partition 25:15
 - 9.5 Example of Congruence Relation 11:04
 - 9.6 Partial Orderings 15:33
 - 9.6 Partial Ordering, Comparable and Incomparable Elements 17:08
 - 9.6 Hasse Diagram 29:01
 - 9.1 Extra Exercise 06:53
 - Exercise: 9.1 Relations and their Properties part 1 35:44
 - Exercise: 9.1 Relations and their Properties part 2 47:05
 - Exercise: 9.1 Relations and their Properties part 3 09:32
 - Exercise: 9.3 representing relation 18:56
 - Exercise: 9.3 Representing Relations (by Matrices) 30:34
 - Exercise: 9.5 equivalence relation 48:34
 - Exercise: 9.6 partial ordering 16:20
 
 
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                        Chapter 9 : Relation (new)  
                        
 
