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词条 Thomas Schick
释义

  1. Education and career

  2. Selected publications

  3. References

  4. External links

Thomas Schick (born 22 May 1969 in Alzey) is a German mathematician, specializing in algebraic topology and differential geometry.

Education and career

Schick studied mathematics and physics at the Johannes Gutenberg University Mainz, where he received in 1994 his Diplom in mathematics and in 1996 his PhD (Promotion) under the supervision of Wolfgang Lück with thesis Analysis on Manifolds of Bounded Geometry, Hodge-deRham Isomorphism and -Index Theorem.[1] As a postdoc he was from 1996 to 1998 at the University of Münster and from 1998 to 2000 an assistant professor at Pennsylvania State University, where he worked with Nigel Higson and John Roe. Schick received his habilitation in 2000 from the University of Münster and is since 2001 a professor for pure mathematics at the University of Göttingen.

His research deals with topological invariants, e.g. -invarianten and those invariants which result from the K-theory of operator algebras. Such invariants arise in generalizations of the Atiyah-Singer index theorem.

Schick, with Wolfgang Lück, introduced the strong Atiyah conjecture. Given a discrete group G, the Atiyah conjecture states that the -Betti numbers of a finite CW-complex that has fundamental group G are integers, provided that G is torsion-free; furthermore, in the general case, the -Betti numbers are rational numbers with denominators determined by the finite subgroups of G. In 2007 Schick, with Peter Linnell, proved a theorem which established conditions under which the Atiyah conjecture for a torsion-free group G implies the Atiyah conjecture for every finite extension of G; furthermore, they proved that the conditions are satisfied for a certain class of groups.[2] In 2000 Schick proved the Atiyah conjecture for a large class of special cases.[3]. In 2007 he presented a method which proved the Baum-Connes conjecture for the full braid groups, and for other classes of groups which arise as (finite) extensions for which the Baum-Connes conjecture is known to be true.[4][5]

In the 1990s there were proofs of many special cases of the Gromov-Lawson-Rosenberg conjecture concerning criteria for the existence of a metric with positive scalar curvature; in 1997 Schick published the first counterexample.[6]

He is the coordinator of the Courant Research Center's Strukturen höherer Ordnung in der Mathematik (Structures of Higher Order in Mathematics) at the University of Göttingen.[7] A major goal of the research center is the investigation of mathematical structures that could play a role in modern theoretical physics, especially string theory and quantum gravity.

He is an editor for Mathematische Annalen. In 2014 he was an invited speaker with talk The topology of scalar curvature at the ICM in Seoul. In 2016 he became a full member of the Akademie der Wissenschaften zu Göttingen.

Selected publications

  • [https://arxiv.org/pdf/1405.4220v2.pdf Topology of scalar curvature.] Proc. ICM 2014, Seoul.
  • [https://arxiv.org/abs/math/0209164 Operator algebras and topology.] ICTP Summer School, Triest 2001.
  • with Ulrich Bunke: [https://arxiv.org/abs/1011.6663 Differential K-Theory.]
  • with Ulrich Bunke: [https://arxiv.org/abs/0707.0046 Smooth K-Theory.] In: Astérisque. No. 328 (2009), 45–135 (2010). {{ISBN|978-2-85629-289-1}}.
  • with Bernhard Hanke and Wolfgang Steimle: The space of metrics of positive scalar curvature. Publ. Math. Inst. Hautes Études Sci. 120 (2014), 335–367. {{doi|10.1007/s10240-014-0062-9}}
  • with Hanke: Enlargeability and index theory. J. Differential Geom. 74 (2006), no. 2, 293–320. [https://arxiv.org/abs/math/0403257 Arxiv]
  • with Dodziuk, Linnell, Mathai, Yates: Approximating L2-invariants and the Atiyah conjecture. Dedicated to the memory of Jürgen K. Moser. Comm. Pure Appl. Math. 56 (2003), no. 7, 839–873. {{doi|10.1002/cpa.10076}}
  • with Rostislav Grigorchuk, Linnell, Żuk: On a question of Atiyah. C. R. Acad. Sci. Paris Sér. I Math. 331 (2000), no. 9, 663–668. [https://arxiv.org/abs/math/0009175 Arxiv]
  • with Wolfgang Lück: torsion of hyperbolic manifolds of finite volume. In: Geometric and Functional Analysis. vol. 9, 1999, pp. 518–567, [https://arxiv.org/abs/dg-ga/9707009 Arxiv.]
  • Integrality of Betti numbers. In: Mathematische Annalen. vol. 317, 2000, pp. 727–750, [https://arxiv.org/abs/math/0001101 Arxiv.]
  • -index theorem for elliptic boundary problems. In: Pacific J. Math. vol. 197, 2001, pp. 423–439, [https://arxiv.org/abs/math/9810133 Arxiv.]

References

1. ^{{MathGenealogy|id=27755}}
2. ^{{cite journal|author=Schick, T.|author2=Linnell, P.|title=Finite group extensions and the Atiyah conjecture|journal=Journal of the American Mathematical Society|volume=20|year=2007|pages=1003–1061|url=http://www.uni-math.gwdg.de/schick/publ/extAtiyah.html}}
3. ^{{cite journal|author=Schick, T.|title=Integrality of Betti numbers|journal=Mathematische Annalen|volume=317|issue=4|year=2000|pages=727–750|doi=10.1007/PL00004421}}
4. ^{{cite journal|author=Schick, T.|title=Finite group extensions and the Baum-Connes conjecture|journal=Geometry and Topology|volume=11|year=2007|pages=1767–1775}} [https://arxiv.org/abs/math.KT/0209165 arXiv preprint]
5. ^{{cite web|title=Thomas Schick: Finite group extensions and the Baum-Connes conjecture|website=Schick's website at the University of Gôttingen (uni-math.gwdg.de)|url=http://www.uni-math.gwdg.de/schick/publ/BC_finite_ext.html}}
6. ^{{cite journal|author=Schick, T.|title=A counterexample to the (unstable) Gromov-Lawson-Rosenberg conjecture|journal=Topology|volume=37|year=1998|pages=1165–1168}} [https://arxiv.org/abs/math/0403063 arXiv preprint]
7. ^{{cite web|website=Göttinger Tageblatt|title=Neuartige Probleme der Mathematik lösen, Göttingen, Courant Forschungszentrum|date=19 May 2009|url=http://www.goettinger-tageblatt.de/Nachrichten/Wissen/Wissen-vor-Ort/Neuartige-Probleme-der-Mathematik-loesen}}

External links

  • Homepage
  • {{cite web|title=Presseinformation: Antrittsvorlesung des Mathematikers Prof. Dr. Thomas Schick|date=15 January 2002|website=Georg-August-Universität Göttingen|url=http://www.uni-goettingen.de/de/3240.html?cid=601}}
{{DEFAULTSORT:Schick, Thomas}}

8 : Topologists|Differential geometers|20th-century German mathematicians|21st-century German mathematicians|University of Mainz alumni|University of Göttingen faculty|1969 births|Living people
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