# Mathematical jokes

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**Abstract** This is a collection of mathematical jokes in various languages. Understanding the jokes
is left as an excercise to the reader.

Q: Wie schwer ist eine Orthonormalbasis?

A: Ein Gramm-Schmidt!

Terra X – der kosmische Code. Diesen Witz muss
ich nicht weiter erklären.

Q: What is closed under multiplication, abelian under addition, distributive and does not boot?

A: A Poetter-Ring!

**Remark:** it can be shown that a Poetter-Ring can also be desribed as a Ring that is silent, no matter how it is configured.

Q: Wieso kann man Vibratoren nicht kontinuierlich regeln?

A: Weil sie diskret sein sollen!

I propose the ultimate Earth theory, which will appease everyone: Klein-Bottle-Earth!

It has numerous advantages:
- Since earth is a manifold, it is locally flat, thus appeasing flat earthers
- It is somewhat rounded, thus appeasing the spherical-earth conspiracists
- It is both hollow and non-hollow at the same time, thus appeasing both
the hollow-earth theorists and the non-hollow earth theorists
- The klein bottle shape adequately explains why no one has fallen off
- If earth's surface really has to be a 2-dimensional manifold, it really should be
non-orientable

### Link list

These are some links to some good math jokes