## 1. MATHEMATICS

#### Subsections

- 1. mathematics - general
- 1.1 proofs
- 1.2 statistics and statisticians
- 1.3 mathematicians
- 1.4 mathematics poetry
- 1.5 mathematics quotes
- 1.6 mathematic puns
- 1.7 mathematical terms
- 1.8 mathematical exams
- 1.9 learning mathematics
- 1.10 mathematical tests to take
- 1.11 mathematical equations
- 1.12 topology
- 1.13 numbers
- 1.14 set theory
- 1.15 functions

### 1.14 SET THEORY

Index | Comments and Contributions | previous page

mathematics
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    What is set theory?

    When there are five people in the room and seven are leaving, two have to
    enter the room, so it is empty.

mathematics
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    From: Dr. David Batchelor batchelor@nssdca.gsfc.nasa.gov:

Theorem: Consider the set of all sets that have never been considered.

Hey! They're all gone!! Oh, well, never mind...

mathematics
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    The world is divided into two classes:
            people who say "The world is divided into two classes",
        and people who say
            The world is divided into two classes:
                    people who say: "The world is divided into two classes",
                and people who say:
                    The world is divided into two classes:
                            people who say ...

mathematics
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    From: kfoster@rainbow.rmii.com (Kurt Foster)

    First mathemetician:  I know this is a group, but it's hard to study.
    Second mathematician:  Well, I can prove it's commutative.
    First mathematician:  Thanks abelian!

mathematics
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    From: Zheng wang80@purdue.edu

    If the set of power stations forms a group under the operation of power
    generation, when isn’t it cyclic?

    When the generators are out of order.

    P.s. this one is original

next page | Index | Comments and Contributions

#### Subsections

- 1. mathematics - general
- 1.1 proofs
- 1.2 statistics and statisticians
- 1.3 mathematicians
- 1.4 mathematics poetry
- 1.5 mathematics quotes
- 1.6 mathematic puns
- 1.7 mathematical terms
- 1.8 mathematical exams
- 1.9 learning mathematics
- 1.10 mathematical tests to take
- 1.11 mathematical equations
- 1.12 topology
- 1.13 numbers
- 1.14 set theory
- 1.15 functions

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