# Alfred Gray (mathematician)

*https://en.wikipedia.org/wiki/Alfred_Gray_(mathematician)*

**Alfred Gray** (October 22, 1939 – October 27, 1998) was an
American
mathematician whose main research interests were in
differential geometry. He also made contributions in the fields of
complex variables and
differential equations.

## Short biography

Alfred Gray was born in Dallas, Texas to Alfred James Gray & Eloise Evans and studied mathematics at the University of Kansas. He received a Ph.D. from the University of California, Los Angeles in 1964 and spent four years at University of California, Berkeley. From 1970–1998 he was a professor at the University of Maryland, College Park.

He died in Bilbao, Spain of a heart attack while working with students in a computer lab at Colegio Mayor Miguel de Unamuno around 4 AM, on October 27, 1998.

## Mathematical contributions

In the broad area of differential geometry, he made specific contributions in classifying various types of geometrical structures, such as ( Kähler manifolds and almost Hermitian manifolds).

Gray introduced the concept of a
nearly Kähler manifold, gave topological obstructions to the existence of geometrical structures, made several contributions in the computation of the volume of
tubes and
balls, curvature identities, etc.
He published a book on tubes^{
[1]} and is the author of two textbooks and over one hundred scientific articles.
His books were translated into
Spanish,
Italian,
Russian and
German).
He was a pioneer in the use of
computer graphics in teaching differential geometry (particularly the geometry of curves and surfaces) and of using electronic computation in teaching both differential geometry and
ordinary differential equations.

## References

**^**Moore, John Douglas (1992). "Review:*Tubes*, by Alfred Gray. Addison-Wesley, 1990" (PDF).*Bull. Amer. Math. Soc. (N.S.)*.**27**(2): 311–313. doi: 10.1090/S0273-0979-1992-00312-9.

## External links

Wikimedia Commons has media related to Alfred Gray (mathematician). |

- List of publications
- Differential geometry web site maintained in his honor
- Webpage of the International Congress on Differential Geometry in Memory of Alfred Gray
- A short film in remembrance of Prof. Alfred Gray