# David W. Henderson

**David Wilson Henderson** (February 23, 1939 – December 20, 2018) was a Professor Emeritus of Mathematics in the Department of Mathematics at Cornell University. His work ranges from the study of algebraic geometry, Persian history of mathematics and exploratory mathematics for teaching prospective mathematics teachers. His papers in the philosophy of mathematics place him with the intuitionist school of philosophy of mathematics.[1][2] His practical geometry, which he put to work and discovered in his carpentry work, gives a perspective of geometry as the understanding of the infinite spaces through local properties.[3] Euclidean geometry is seen in his work as extendable to the spherical and hyperbolic spaces starting with the study and reformulation of the 5th postulate.[3][4]

David W. Henderson | |
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David W. Henderson with Daina Taimiņa | |

Born | February 23, 1939 |

Died | December 20, 2018 79) | (aged

Citizenship | American |

Known for | algebraic geometry, Persian history of mathematics and exploratory mathematics |

Scientific career | |

Fields | Mathematician |

On December 21, 2018, *The Algebra Project* reported that he had died in a traffic accident. He was struck by an automobile in a crosswalk on December 19, and died the next day from his injuries.[5]

## References

- Henderson, D., (1981).
*Three Papers, For the Learning of Mathematic*, Vol. 1, No. 3 (March, 1981), pp. 12–15 - Henderson, D. W., (1990).
*The Masquerade of Formal Mathematics, and how it damages the human spirit*, in R Noss, A. Brown, P. Drake, P. Dowlings, M. Harris, C. Hoyles, and S Mellin-Olsen, eds,*Proceedings of the First International Conference: Political Dimensions of Mathematics Education: Actions and Critique*, Institute of Education: University of London. - Henderson, D. W. (1990).
*Experiencing Geometry on Plane and Sphere*, Prentice Hall Upper Saddle River, NJ. - Henderson, D. W. and Taimina, D., (1998).
*Differential Geometry: A Geometric Introduction*, Prentice Hall, Upper Saddle River, NJ. - "December 2018 Algebra Project Newsletter – The Algebra Project, INC". Retrieved 2019-01-13.

## Bibliography

- Henderson, D. W. & Taimina, D. (2001).
*Crocheting the Hyperbolic Plane*,*Mathematical Intelligencer*, vol.23, No. 2, 2001, pp. 17–28. - Henderson, D. W. & Taimina, D. (2001).
*Essays in Mathematics?*(Latvian), Skolotajs (Teacher journal), 4(28), 2001, Riga, pp. 27–31. - Henderson, D. W. & Taimina, D. (2001).
*Geometry*,*The Hutchinson Encyclopedia of Mathematics*. - Henderson, D. W. & Taimina, D. (2004).
*Non-Euclidean Geometries*,*Encyclopædia Britannica*. - Henderson, D. W. & Taimina, D. (2005).
*Experiencing Geometry: Euclidean and non-Euclidean with History*, Prentice Hall, Upper Saddle River, NJ. - Taimina, D. & Henderson, W. (2005).
*How to Use History to Clarify Common Confusions in Geometry*, MAA Notes volume No.68, p. 57-73. - Taimina, D. & Henderson, D. W. (2005).
*Experiencing Geometry: Euclidean and Non-Euclidean with History*, 3rd Edition. Prentice-Hall, Upper Saddle River, NJ. - Taimina, D. & Henderson, D. W. (2006).
*Experiencing Meanings in Geometry*, in Nathalie Sinclair, David Pimm, William Higginson eds,*Mathematics and the Aesthetic*, Springer, pp. 58–83.

## External links

- Personal webpage
- Papers, articles and talks
- David W. Henderson and Daina Taimina, Expericing Meanings of Geometry, Chapter 3 in Aesthetics and Mathematics, (edited by David Pimm and M. Sinclair), Springer-Verlag. 2006, p.58-83.pdf.