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Lecture 9 of 30

Full Introduction Condensed Into One Video(TONS of Knowledge)

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Section 1: Introductory Videos6 videos

Definition of a Surjective(Onto) Function

13m

The Image of a Set Under a Function

18m

Definition of a Function

11m

The Inverse Image of a Set Under a Function

22m

Defnition of an Injective(one to one) Function

12m

Intuitive Explanation for Injective, Surjective, and Bijective Functions

16m
Section 2: Proofs with Injections, Surjections, and Bijections10 videos

Proving a Function is Surjective Example 2

11m

Proving a Function is Surjective Example 1

20m

Proving a Function is Surjective Example 3

14m

Proving a Function is Surjective Example 4

11m

Proving a Function is Injective Example 2

9m

Proving a Function is Injective Example 1

22m

Proving a Function is Surjective Example 5

1h

Proving a Function is Injective Example 3

11m

Proving a Function is Not Surjective

14m

Proving a Piecewise Function is Bijective Example 1

37m
Section 3: Two More Full Introductions with Sample Proofs2 videos

Full Introduction Condensed Into One Video(TONS of Knowledge)

54mNow Playing

Bonus Full introduction with Audience Uncut and Unedited(TONS of Knowledge)

1h 30m
Section 4: Proofs of Key Properties of Surjective and Injective Functions4 videos

Injectivity and Function Composition Proof 1

7m

Injectivity and Function Composition Proof 2

6m

Surjectivity and Function Composition Proof 2

7m

Surjectivity and Function Composition Proof 1

13m
Section 5: Direct Image and Inverse Image Proofs5 videos

Direct Image of Union Proof

26m

Inverse Image of Intersection Proof 2

13m

Inverse Image of Intersection Proof 1

18m

Direct Image of Intersection Under an Injection Proof

25m

Inverse Image of Union Proof

15m
Section 6: More Proofs3 videos

Proof 2

11m

Proof 1

34m

Proof 3

6m