# Difference between revisions of "SP20:Lecture 4 prep"

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− | [[FA19:Lecture 4 Proof techniques| | + | I plan to talk about [[proof technique]]s and to start covering the definitions for [[function]]s. |

+ | Last semester, proof techniques were covered in [[FA19:Lecture 4 Proof techniques|lecture 4]] and [[FA19:Lecture 5 Function properties|lecture 5]], while function properties were covered in [[FA19:Lecture 5 Function properties|lecture 5]] and [[FA19:Lecture 5 Function properties|lecture 6]]. We'll see how far we get. | ||

− | Please come to lecture | + | Please come to lecture knowing the following definitions: |

{{Definition:Function}} | {{Definition:Function}} |

## Revision as of 15:07, 27 January 2020

I plan to talk about proof techniques and to start covering the definitions for functions. Last semester, proof techniques were covered in lecture 4 and lecture 5, while function properties were covered in lecture 5 and lecture 6. We'll see how far we get.

Please come to lecture knowing the following definitions:

Definition:

and are sets, then a **Function**Definition:

**Surjective**