Maths jokes

1) Why do mathematicians confuse Halloween and Christmas?

2) At a recent conference on logic there were 600 attendees and only one toilet facility. What “common or garden” compound logical sentence, or proposition, may be validly inferred?

3) What is zenzizenzizenzic?

Answers.

An astronomer, a physicist and a mathematician are on a train in Scotland. The astronomer looks out of the window, sees a black sheep standing in a field, and remarks, “How odd. All the sheep in Scotland are black!” “No, no, no!” says the physicist. “Only some Scottish sheep are black.” The mathematician rolls his eyes at his companions’ muddled thinking and says, “In Scotland, there is at least one sheep, at least one side of which appears to be black from here some of the time. Ian Stewart Concepts of Modern Mathematics

i prefer pi — mathematical palindrome and contra tau

by xkcd

thanks to Mark Heath for permission to use his cartoon.

I didn’t think that klein bottles existed, now I’m not so sure.