Biography:Lamberto Cesari

Short description: Italian mathematician

Lamberto Cesari
Born	(1910-09-23)23 September 1910 Bologna
Died	12 March 1990(1990-03-12) (aged 79) Ann Arbor
Nationality	Italian
Citizenship	United States
Alma mater	Scuola Normale Superiore
Known for	Functions of bounded variation Nonlinear functional analysis Theory of surface area
Scientific career
Fields	Geometric measure theory Mathematical analysis Functional analysis Calculus of variation
Institutions	Istituto Nazionale per le Applicazioni del Calcolo Università di Pisa Università di Bologna University of Michigan
Doctoral advisor	Leonida Tonelli
Other academic advisors	Constantin Carathéodory Mauro Picone
Doctoral students	Jack K. Hale

Lamberto Cesari (23 September 1910 – 12 March 1990) was an Italian mathematician naturalized in the United States , known for his work on the theory of surface area, the theory of functions of bounded variation, the theory of optimal control and on the stability theory of dynamical systems: in particular, by extending the concept of Tonelli plane variation, he succeeded in introducing the class of functions of bounded variation of several variables in its full generality.

Biography

In 1933, he was awarded his laurea degree at the Scuola Normale Superiore in Pisa under the direction of Leonida Tonelli. After a period of study from 1934 to 1935 in Germany at Monaco di Baviera under the direction of Constantin Carathéodory, he went back to Pisa at the Scuola Normale Superiore for a year, and then to Rome at the Istituto Nazionale per le Applicazioni del Calcolo, at the time directed by Mauro Picone.

From 1938 to 1946 he went back as a professore incaricato at Pisa University: in 1947 he was at the University of Bologna as a professor of mathematical analysis.

In 1948 he went to the United States as a visiting professor at the Institute for Advanced Study in Princeton, at Purdue University in Lafayette, at the University of California - Berkeley and at the University of Wisconsin–Madison.

In 1960 he was appointed as a professor of mathematical analysis at the University of Michigan at Ann Arbor where he remained until his retirement in 1981. In 1976 he became a citizen of the United States , while keeping close scientific contacts with the Italian mathematical community.

The Lamberto Cesari chair

The department of Mathematics at the University of Michigan honored the memory of Lamberto Cesari with the creation of a professorship chair.

Work

Research activity

He is remembered for his achievements on the Plateau's problem, on the theory of parametric minimal surfaces, on Lebesgue measure of continuous and related other variational problems: he also worked in the field of optimal control and studied periodic solutions of systems of nonlinear ordinary differential equations by using methods of nonlinear functional analysis. In the paper (Cesari 1936) he introduced a generalization of functions of bounded variation to the multi-dimensional setting, now acknowledged as the most versatile of such generalizations. He wrote about 250 scientific works on topics such as non linear functional analysis, measure theory, optimal control: his published works include the fundamental monographs (Cesari 1956), (Cesari 1971) and (Cesari 1983).

Selected publications

Papers

Scientific papers

• Cesari, Lamberto (1936), "Sulle funzioni a variazione limitata" (in it), Annali della Scuola Normale Superiore, Serie II 5 (3–4): 299–313, http://www.numdam.org/item?id=ASNSP_1936_2_5_3-4_299_0 . Available at Numdam. In this paper Cesari extends the now called Tonelli plane variation concept in order to include a subclass of the class of integrable functions.
• Cesari, Lamberto (April 1950), "On the Representation of Surfaces", American Journal of Mathematics 72 (2): 335–346, doi:10.2307/2372037 .

Biographical, historical and survey papers

• Cesari, Lamberto (May 1950), "Area and representation of surfaces", Bulletin of the American Mathematical Society 56 (3): 218–232, doi:10.1090/S0002-9904-1950-09371-9, http://projecteuclid.org/euclid.bams/1183514764 
• Cesari, Lamberto; Rado, Tibor (1952), "Applications of area theory in analysis", Proceedings of the International Congress of Mathematicians, 1950. Volume II, Conference in Algebra, Conference in Analysis, Conference in Applied Mathematics, Conference in Topology, ICM Proceedings, Providence, R.I.: American Mathematical Society, pp. 174–179, http://www.mathunion.org/ICM/ICM1950.2/Main/icm1950.2.0174.0179.ocr.pdf .
• Cesari, Lamberto (1954), "Retraction, homotopy, integral", Proceedings of the International Congress of Mathematicians, 1954. Volume III, ICM Proceedings, Amsterdam–Groningen: Erven P. Noordhoff N.V. / North-Holland Publishing Company, pp. 77–84, http://www.mathunion.org/ICM/ICM1954.3/Main/icm1954.3.0077.0084.ocr.pdf .
• Cesari, Lamberto (1986), "L'opera di Leonida Tonelli e la sua influenza nel pensiero scientifico del secolo", in Montalenti, G.; Amerio, L.; Acquaro, G. et al. (in it), Convegno celebrativo del centenario della nascita di Mauro Picone e Leonida Tonelli (6–9 maggio 1985), Atti dei Convegni Lincei, 77, Roma: Accademia Nazionale dei Lincei, pp. 41–73, http://www.lincei.it/pubblicazioni/catalogo/volume.php?lg=e&rid=32847, retrieved 2008-05-23 . "The work of Leonida Tonelli and his influence on scientific thinking in this century" (English translation of the title) is an ample commemorative article, reporting recollections of the Author about teachers and colleagues, and a detailed survey of his and theirs scientific work, presented at the International congress in occasion of the celebration of the centenary of birth of Mauro Picone and Leonida Tonelli (held in Rome on May 6–9, 1985).

Books

• Cesari, Lamberto (1956), Surface Area, Annals of Mathematics Studies, 35, Princeton, New Jersey: Princeton University Press, pp. x+595, ISBN 978-0-691-09585-1, https://books.google.com/books?id=JN3U6cBoS3QC . His work summarizing the theory of surface area, including his own contributions.
• Cesari, Lamberto (1971), Asymptotic behavior and stability problems in ordinary differential equations, Ergebnisse Der Mathematik Und Ihrer Grenzgebiete, 16 (3rd ed.), Berlin-Heidelberg-New York City: Springer-Verlag, pp. ix+271, ISBN 978-0-387-05435-3 
• Cesari, Lamberto (1983), Optimization-Theory and Applications. Problems with ordinary differential equations, Applications of Mathematics, 17, Berlin-Heidelberg-New York City: Springer-Verlag, pp. xiv+542, ISBN 978-0-387-90676-8 .

See also

• Bounded variation
• Constantin Carathéodory
• Mauro Picone
• Leonida Tonelli
• Total variation

References

Biographical and general references

• Accademia Nazionale dei Lincei (2012) (in it), Annuario dell'Accademia Nazionale dei Lincei 2012 – CDX dalla Sua Fondazione, Roma: Accademia Nazionale dei Lincei, pp. 734, http://www.lincei.it/files/doc/ANL_Annuario_2012.pdf, retrieved 2016-05-15 . The "Yearbook" of the renowned Italian scientific institution, including an historical sketch of its history, the list of all past and present members as well as a wealth of information about its academic and scientific activities.
• Barbieri, Francesco; Taddei, Ferdinando (2006) (in it), L'Accademia di Scienze, Lettere e Arti di Modena dalle origini (1683) al 2005. Tomo I – La storia e i soci, Modena: Mucchi Editore, pp. 125–126, ISBN 978-88-7000-419-9, http://www.accademiasla-mo.it/pdf/Storia_Accademia_Soci.pdf, retrieved 2017-01-27 . The first part ("Tomo") of an extensive work on the "Accademia di Scienze, Lettere e Arti di Modena", reporting the history of the academy and biographies of members up to the year 2006.
• Cesari, Lamberto (1986), "L'opera di Leonida Tonelli e la sua influenza nel pensiero scientifico del secolo", in Montalenti, G.; Amerio, L.; Acquaro, G. et al. (in it), Convegno celebrativo del centenario della nascita di Mauro Picone e Leonida Tonelli (6–9 maggio 1985), Atti dei Convegni Lincei, 77, Roma: Accademia Nazionale dei Lincei, pp. 41–73, http://www.lincei.it/pubblicazioni/catalogo/volume.php?lg=e&rid=32847, retrieved 2008-05-23 . "The work of Leonida Tonelli and his influence on scientific thinking in this century" (English translation of the title) is an ample commemorative article, reporting recollections of the Author about teachers and colleagues, and a detailed survey of his and theirs scientific work, presented at the International congress in occasion of the celebration of the centenary of birth of Mauro Picone and Leonida Tonelli (held in Rome on May 6–9, 1985).
• Cinquini, Silvio (1992), "Ricordo di Lamberto Cesari" (in it), Rendiconti Dell' Istituto Lombardo di Scienze e Lettere, Parte Generale e Atti Ufficiali 125 (1991): 219–236 .
• Mitchell, Janet A., ed. (1980), A Community of Scholars. Faculty and Members 1930-1980, Princeton, New Jersey: The Institute for Advanced Study, pp. xxii+565, http://library.ias.edu/files/pdfs/hs/cos.pdf .
• The Institute for Advanced Study (2012), "Lamberto Cesari", A Community of Scholars, https://www.ias.edu/scholars/lamberto-cesari, retrieved 20 October 2012 .
• Pucci, Patrizia (1992), "Lamberto Cesari: Ricordo di un maestro" (in it), Atti e Memorie della Accademia Nazionale di Scienze Lettere e Arti di Modena, Serie VII IX (1991–92) (Sezione I): 87–95 . A short commemoration surveying Cesari's personality and his ability as a teacher and mentor for new mathematicians: a short survey of his scientific contributions is also given.

Scientific references

• Graffi, Dario (1984), "On the Contributions of Lamberto Cesari to Applied Mathematics", in Vinti, C., Nonlinear Analysis and Optimization. Proceedings of the International Conference held in Bologna, Italy, May 37, 1982, Lecture Notes in Mathematics, 1107, Berlin–Heidelberg–New York–Tokyo: Springer Verlag, pp. 1–18, doi:10.1007/BFb0101490, ISBN 978-0-387-13903-6, https://link.springer.com/chapter/10.1007%2FBFb0101490 , ISBN:3-540-13903-6, ISBN:978-3-540-13903-4. A survey of the work of Lamberto Cesari in applied mathematics.

Publications dedicated to him or to his memory

• Vinti, C., ed. (1984), Nonlinear Analysis and Optimization. Proceedings of the International Conference held in Bologna, Italy, May 37, 1982, Lecture Notes in Mathematics, 1107, Berlin–Heidelberg–New York–Tokyo: Springer Verlag, pp. V+214, doi:10.1007/BFb0101489, ISBN 978-0-387-13903-6, https://archive.org/details/nonlinearanalysi0000unse/page/ , ISBN:3-540-13903-6, ISBN:978-3-540-13903-4. The proceedings of an international conference held to celebrate Lamberto Cesari's 70th birthday.

External links

• O'Connor, John J.; Robertson, Edmund F. (March 2011), "Lamberto Cesari", MacTutor History of Mathematics archive, University of St Andrews, http://www-history.mcs.st-andrews.ac.uk/Biographies/Cesari.html .
• PRISTEM bibliography (in Italian).
• Lamberto Cesari at the Mathematics Genealogy Project
• The Centro Studi Interfacoltà Lamberto Cesari at the University of Perugia, and a biography of Lamberto Cesari (in Italian).