**Eugenio Calabi** is a

Italian AmericanAn Italian American , is an American of Italian ancestry. The designation may also refer to someone possessing Italian and American dual citizenship...

mathematicianA mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

and professor emeritus at the

University of PennsylvaniaThe University of Pennsylvania is a private, Ivy League university located in Philadelphia, Pennsylvania, United States. Penn is the fourth-oldest institution of higher education in the United States,Penn is the fourth-oldest using the founding dates claimed by each institution...

, specializing in differential geometry, partial differential equations and their applications.

Calabi was a

Putnam FellowThe William Lowell Putnam Mathematical Competition, often abbreviated to the Putnam Competition, is an annual mathematics competition for undergraduate college students of the United States and Canada, awarding scholarships and cash prizes ranging from $250 to $2,500 for the top students and $5,000...

as an undergraduate at

MITThe Massachusetts Institute of Technology is a private research university located in Cambridge, Massachusetts. MIT has five schools and one college, containing a total of 32 academic departments, with a strong emphasis on scientific and technological education and research.Founded in 1861 in...

in 1946. In 1950 he received his Ph.D. from

Princeton UniversityPrinceton University is a private research university located in Princeton, New Jersey, United States. The school is one of the eight universities of the Ivy League, and is one of the nine Colonial Colleges founded before the American Revolution....

, where his advisor was

Salomon BochnerSalomon Bochner was an American mathematician of Austrian-Hungarian origin, known for wide-ranging work in mathematical analysis, probability theory and differential geometry.- Life :...

. He later obtained a professorship at the

University of MinnesotaThe University of Minnesota, Twin Cities is a public research university located in Minneapolis and St. Paul, Minnesota, United States. It is the oldest and largest part of the University of Minnesota system and has the fourth-largest main campus student body in the United States, with 52,557...

.

In 1964, Calabi joined the mathematics faculty at the

University of PennsylvaniaThe University of Pennsylvania is a private, Ivy League university located in Philadelphia, Pennsylvania, United States. Penn is the fourth-oldest institution of higher education in the United States,Penn is the fourth-oldest using the founding dates claimed by each institution...

. Following the retirement of the great German-American mathematician

Hans RademacherHans Adolph Rademacher was a German mathematician, known for work in mathematical analysis and number theory.-Biography:...

, he was appointed to the

Thomas A. Scott Professorship of MathematicsThe Thomas A. Scott Professorship of Mathematics is an academic grant made to the University of Pennsylvania. It was established in 1881 by the railroad executive and financier: Thomas Alexander Scott.-Recipients:*Ezra Otis Kendall, 1881 – 1899...

at the University of Pennsylvania in 1967. He won the Steele Prize from the

American Mathematical SocietyThe American Mathematical Society is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, which it does with various publications and conferences as well as annual monetary awards and prizes to mathematicians.The society is one of the...

in 1991 for his work in differential geometry. In 1994, Calabi assumed emeritus status.

His work on the

Calabi conjectureIn mathematics, the Calabi conjecture was a conjecture about the existence of good Riemannian metrics on complex manifolds, made by and proved by ....

for Kähler metrics led to the development of

Calabi-Yau manifoldA Calabi-Yau manifold is a special type of manifold that shows up in certain branches of mathematics such as algebraic geometry, as well as in theoretical physics...

s.

He has four grandchildren.

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