Christina Sormani is a professor of mathematics at City University of New York affiliated with Lehman College and the CUNY

Graduate Center The Graduate School and University Center of the City University of New York (CUNY Graduate Center) is a public research institution and post-graduate university in New York City. Serving as the principal doctorate-granting institution of the ...

. She is known for her research in

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 point ...

metric geometry In mathematics, a metric space is a set together with a notion of ''distance'' between its elements, usually called points. The distance is measured by a function called a metric or distance function. Metric spaces are the most general settin ...

, and

Ricci curvature In differential geometry, the Ricci curvature tensor, named after Gregorio Ricci-Curbastro, is a geometric object which is determined by a choice of Riemannian or pseudo-Riemannian metric on a manifold. It can be considered, broadly, as a measur ...

, as well as her work on the notion of intrinsic flat distance.

Career

Sormani received her Ph.D. from

New York University New York University (NYU) is a private research university in New York City. Chartered in 1831 by the New York State Legislature, NYU was founded by a group of New Yorkers led by then- Secretary of the Treasury Albert Gallatin. In 1832, th ...

in 1996 under

Jeff Cheeger Jeff Cheeger (born December 1, 1943, Brooklyn, New York City) is a mathematician. Cheeger is professor at the Courant Institute of Mathematical Sciences at New York University in New York City. His main interests are differential geometry and ...

. She then took postdoctoral positions at

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

(under

Shing-Tung Yau Shing-Tung Yau (; ; born April 4, 1949) is a Chinese-American mathematician and the William Caspar Graustein Professor of Mathematics at Harvard University. In April 2022, Yau announced retirement from Harvard to become Chair Professor of mathem ...

) and

Johns Hopkins University Johns Hopkins University (Johns Hopkins, Hopkins, or JHU) is a private research university in Baltimore, Maryland. Founded in 1876, Johns Hopkins is the oldest research university in the United States and in the western hemisphere. It consi ...

(under

William Minicozzi II William Philip Minicozzi II is an American mathematician. He was born in Bryn Mawr, Pennsylvania, in 1967. Career Minicozzi graduated from Princeton University in 1990 and received his Ph.D. from Stanford University in 1994 under the direction o ...

). Sormani now works at Lehman College in the City University of New York and at the CUNY Graduate Center.

Awards and honors

In 2009, Sormani was an invited speaker at the Geometry Festival.24th Annual Geometry Festival 2009
in memory of

Detlef Gromoll Detlef Gromoll (13 May 1938 – 31 May 2008) was a mathematician who worked in Differential geometry. Biography Gromoll was born in Berlin in 1938, and was a classically trained violinist. After living and attending school in Rosdorf and gra ...

In 2015, Sormani became a fellow of the

American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...

.List of Fellows of the American Mathematical Society
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Selected publications

*Sormani, Christina. (2000). Nonnegative Ricci curvature, small linear diameter growth and finite generation of fundamental groups. ''Journal of Differential Geometry,'' 54(3), 547–559
MR 1823314
*Sormani, Christina, & Wei, Guofang. Hausdorff convergence and universal covers. ''Transactions of the'' ''American Mathematical Society,'' 353 (2001), no. 9, 3585–3602
MR 1837249
*Sormani, Christinam & Wei, Guofang. Universal covers for Hausdorff limits of noncompact spaces. ''Transactions of the'' ''American Mathematical Society,'' 356 (2004), no. 3, 1233–1270
MR 2021619
*Sormani, Christina, & Wenger, Stefan. (2010). Weak convergence of currents and cancellation. ''Calculus of Variations and Partial Differential Equations,'' 38, 183–206. https://doi.org/10.1007/s00526-009-0282-x * Lee, Dan A, & Sormani, Christina. (2014). Stability of the positive mass theorem for rotationally symmetric Riemannian manifolds. ''Journal für die reine und angewandte Mathematik'' (''Crelles Journa''l) 686. https://doi.org/10.1515/crelle-2012-0094 *Sormani, Christina, & Wenger, Stefan. (2011). The intrinsic flat distance between Riemannian manifolds and other integral current spaces." ''Journal of Differential Geometry,'' 87(1), 117–199
MR 2786592

References

{{DEFAULTSORT:Sormani, Christina Hunter College High School alumni Living people American women mathematicians 20th-century American mathematicians 21st-century American mathematicians Fellows of the American Mathematical Society Lehman College faculty Graduate Center, CUNY faculty City University of New York faculty Differential geometers 20th-century women mathematicians 21st-century women mathematicians Mathematicians from New York (state) Year of birth missing (living people) 20th-century American women 21st-century American women