Keti Tenenblat (born 27 November 1944 in Izmir,

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...

) is a Turkish- Brazilian mathematician working on

Riemannian geometry Riemannian geometry is the branch of differential geometry that studies Riemannian manifolds, smooth manifolds with a ''Riemannian metric'', i.e. with an inner product on the tangent space at each point that varies smoothly from point to poin ...

, the applications of

differential geometry Differential geometry is a mathematical discipline that studies the geometry of smooth shapes and smooth spaces, otherwise known as smooth manifolds. It uses the techniques of differential calculus, integral calculus, linear algebra and multili ...

partial differential equations In mathematics, a partial differential equation (PDE) is an equation which imposes relations between the various partial derivatives of a multivariable function. The function is often thought of as an "unknown" to be solved for, similarly to ...

, and

Finsler geometry In mathematics, particularly differential geometry, a Finsler manifold is a differentiable manifold where a (possibly asymmetric) Minkowski functional is provided on each tangent space , that enables one to define the length of any smooth c ...

. Together with Chuu-Lian Terng, she generalized Backlund theorem to higher dimensions.

Education

She was born in 1944, in Turkey, where she attended elementary and junior high school at an Italian school. In 1957, her family emigrated to Brazil. In Rio de Janeiro, she graduated from high school at Bennett College and joined the National Faculty of Philosophy at the University of Brazil (today UFRJ), in the Mathematics Degree. From 1964 to 1968, she taught mathematics at a secondary school in Rio. She completed her university course in 1967 and began her higher education activities at the Institute of Mathematics of

UFRJ The Federal University of Rio de Janeiro or University of Brazil (UFRJ; pt, Universidade Federal do Rio de Janeiro or ') is a public university, public research university located in the state of Rio de Janeiro (state), Rio de Janeiro, Brazil. ...

in 1968. Between 08/1968 to 07/1969, she attended a master's degree in mathematics at the

University of Michigan , mottoeng = "Arts, Knowledge, Truth" , former_names = Catholepistemiad, or University of Michigania (1817–1821) , budget = $10.3 billion (2021) , endowment = $17 billion (2021)As o ...

, USA, while accompanying her husband who was study abroad. Upon returning to Brazil, she returned to teaching at UFRJ and began a doctoral program at

IMPA is a recurring fictional character in Nintendo's ''The Legend of Zelda'' series. She is one of the oldest and most frequently recurring characters in the series, having appeared in six titles of ''The Legend of Zelda'' games and several spin-off ...

. She defended her doctoral dissertation entitled "An estimate for the length of closed geodesics in Riemannian varieties" in 1972, under the direction of Manfredo P. do Carmo.

Career

From 1973 she joined the faculty of the

University of Brasilia A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, the ...

(UnB) where she became a Full Professor in 1989. From 1975 to 1978 she pursued a postdoctoral position at the Department of Mathematics at the

University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, Irvine, Los Angeles, Merced, Riverside, San Diego, San Francisco, ...

, Berkeley. During this period, she developed her research under the influence of S. S. Chern and became interested in studying the interaction between

and

differential equation In mathematics, a differential equation is an equation that relates one or more unknown functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent their rates of change, an ...

s. After 1978, her visits abroad were short-lived. She was a visiting professor at

Yale University Yale University is a private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the third-oldest institution of higher education in the United States and among the most prestigious in the wo ...

, MSRI Berkeley, Institute of Theoretical Physics, Santa Barbara, IMA Minnesota, University of Montreal, McGill University, CRM Montreal, Nankai Institute and Fudan Univ. China. She is a recipient of Brazil's National Order of Scientific Merit in Mathematics, Emeritus Professor at the

University of Brasília The University of Brasília ( pt, Universidade de Brasília, UnB) is a federal public university in Brasília, the capital of Brazil. It was founded in 1960 and has since consistently been named among the top five Brazilian universities and the ...

, and was President of the

Brazilian Mathematical Society The Brazilian Mathematical Society ( pt, Sociedade Brasileira de Matemática, SBM) is a professional association founded in 1969 at Instituto de Matemática Pura e Aplicada to promote mathematics education in Brazil. Presidents *1969–1971 ...

in 1989–1991. She has been a member of the

Brazilian Academy of Sciences The Brazilian Academy of Sciences ( pt, italic=yes, Academia Brasileira de Ciências or ''ABC'') is the national academy of Brazil. It is headquartered in the city of Rio de Janeiro and was founded on May 3, 1916. Publications It publishes a lar ...

since 1991. She is also the author of the books ' (1988), and ' (1981).

Personal life

In 1965, she married Moyses Tenenblat, an engineer graduated from the National School of Engineering. Sons Dany (1970), Nitza (1973), Leo (1975) and grandchildren Gabriel (1995), Yuri (1998), Luisa (2000) and Clara (2005) were born of this marriage.

Selected publications

* * *

References

{{DEFAULTSORT:Tenenblat, Keti Turkish mathematicians 1944 births Living people Differential geometers Textbook writers Women textbook writers Instituto Nacional de Matemática Pura e Aplicada alumni PDE theorists Members of the Brazilian Academy of Sciences Expatriate academics in Brazil 20th-century Brazilian mathematicians 21st-century Brazilian mathematicians 20th-century women mathematicians 21st-century women mathematicians