The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.


Once Upon a Number: The Hidden Mathematical Logic of Stories, Appendix: Humor and Computation (p. 132), Basic Books. 1998


The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.

The once-surprising existence of non-Euclidean models of Euclid's first four axioms can be seen as a sort of mathematical joke.