Skip to content. | Skip to navigation

Name: Ionescu

First name: Paltin

Date of birth: August 9, 1951

Place of birth: Bucharest, Romania

Address: Dipartimento di Matematica, via Machiavelli 35, Ferrara 44121, Italy

E-mail: Paltin.Ionescu@unife.it

Main field of interest:

ALGEBRAIC GEOMETRY

Studies:

1975: Master in Algebraic Geometry, University of Bucharest

1984: Ph.D. Thesis: Submanifolds of small degree of the complex

projective space, defended on 15.12.1984 at the

University of Bucharest, under the supervision of Professor Gh. Galbura.

Positions:

1975–1980: High school teacher, Bucharest

1980– 1990: Assistant professor, Department of Mathematics, University of Bucharest

1990–1996: Associate professor, Department of Mathematics, University of Bucharest

1996-2012: Full professor, Department of Mathematics, University of Bucharest

2001-2016: Senior researcher, Institute of Mathematics of the Romanian Academy, Bucharest

Since 2011: Professor of Geometry, Department of Mathematics, University of Ferrara

Visiting-professor positions:

1990: Paris VII (March–April 1990)

1991: Bayreuth (November–December 1991)

1994: Humboldt-Berlin (November 1994)

1994–1997: Angers (January–June 1994, January–June 1995, February–April 1996, February–April 1997)

1998: Geneva (January–July 1998)

1999: Montpellier (February–July 1999)

2000–2003: Angers (April–May 2000, February–April 2002, March 2003)

2003: Genoa (October 2003)

2004: Lille (March 2004)

2005–2008: Genoa (“Rientro dei Cervelli”)

Distinctions:

I was awarded the prize “Simion Stoilow” by the Romanian Academy in 1986.

Talks:

I was an invited speaker at the international conferences/workshops from:

Bucharest (1980, 1981, 1982, 1989, 2007, 2011, 2013), Eisenach (1982), Bayreuth (1990), Cetraro (1990), L’Aquila (1988,

1992),

Tokyo (1990), Constanta (1996, 2002, 2010), Budapest (2001), Pitesti (2001), Siena (2004), Genoa (2006,

2008, 2010), Nice (2007), Madrid (2007, 2009), Rio de Janeiro (2007), Rome (2012), Seoul

(2011), Sibiu (2009),

Trento (2007), Cluj (2010), Daejeon (2010, 2011),

Eforie Nord (2013), Ferrara (2015).

I delivered several (series of) talks during my visits to the following universities:

Berlin Humboldt (1984, 1994), Paris VII (1990, 2017), Orsay (1990), Bayreuth (1991), Pisa Scuola Normale (1992),

Angers

(1994, 1995, 1996, 1997, 2000, 2002, 2009), Nantes (1994, 1997), Bordeaux (1997), Geneva (1998), Genoa (1998, 2003,

2005, 2006), Montpellier (1999), Rome2 (2003, 2007), Lille (2004),

Milan (2005), Ferrara (2006, 2011), Madrid

Complutense (2007, 2011), Turin (2008), Nice (2008), Catania (2009), Ann Arbor (2009), Nancy (2011).

Summer Schools: Gargnano 2007; Perugia 2008; Catania Pragmatic 2010.

Citations:

Our papers have been quoted by more than 200 mathematicians in about 700 citations.

We mention the names of

J. Alexander, L. Badescu, C. Banica, M. Beltrametti, F. Bogomolov, A. Buium, F. Campana, F. Catanese, C.

Ciliberto, L. Chiantini,

W. Decker, L. Ein, H. Flenner, T. Fujita, K. O’Grady, M. Gross, K. Hulek, J-M. Hwang, V. A. Iskovskikh, Y.Kawamata,

S. Kebekus, J. Kollar, A. F. Lopez, M. Mella, R. Miranda, Y. Miyaoka, Y. Namikawa, C. Okonek, T. Peternell, R.

Piene, I. G. Prokhorov, F. Russo, F. Sakai, M. Schneider, F-O. Schreyer, N. Shepherd-Barron, A. J. Sommese, E.

Tevelev, A. Van de Ven, M. Verbitsky, J.

Wisniewski, F. L. Zak.

Editor:

Since 2012 I am the Editor-in-Chief for the journal Annali dell'Università di Ferrara, published by Springer.

List of Publications

1. Note on Bertini’s theorems on hyperplane sections (in Romanian), St. Cerc. Matem. 29(1977), 381–383.

2. Deformations of complete intersections, Rev. Roum. Math. Pures Appl. 25(1980), 751–758.

3. Varietees projectives lisses de degres 5 et 6, C.R. Acad. Sci.

Paris Sc. Math. 293(1981), 685–687.

4. An enumeration of all smooth, projective varieties of degree 5 and 6, INCREST Preprint Series Math. 74(1981).

5. Varieties with sectional genus 2, INCREST Preprint Series Math. 110(1981).

6. Embedded projective varieties of small invariants, in Proc. Week Alg. Geom. Bucharest 1982, Lecture Notes Math.

vol. 1056, Springer Verlag, Berlin 1984, pp. 142–186.

7. Varieties of small degree, An. St. Univ. A.I. Cuza, Iassy 31(1985), 17–19.

8. On varieties whose degree is small with respect to codimension, Math. Ann. 271(1985), 339– 348.

9. Generalized adjunction and applications, Math.

Proc. Cambridge Phil. Soc. 99(1986), 457– 472.

10. Embedded projective varieties of small invariants II, Rev.

Roum. Math. Pures Appl. 31(1986), 539–544.

11. Ample and very ample divisors on surfaces, Rev. Roum. Math. Pures

Appl. 33(1988), 349–358.

12. Embedded projective varieties of small invariants III, in Proc. Conf. L’Aquila 1988, Lecture Notes Math. vol.

1417, Springer Verlag, Berlin 1990, pp. 138–154.

13. (with M. Toma) Boundedness for some special families of embedded manifolds, in Proc. Conf. L’Aquila 1992,

Contemporary Math. vol. 162, AMS 1994, pp. 215–225.

14. (with M. Toma) On very ample vector bundles on curves,Int.Journal

Math. 8(1997), 633– 643.

15. Le probleme du relevement pour les diviseurs strictement nef, Rev. Roum. Math. Pures Appl. 44(1999), 405–413.

16. (with L. Badescu, M. Beltrametti) Almost-lines and quasi-lines on projective manifolds, in Complex Analysis and

Algebraic Geometry (in memory of M. Schneider), de Gruyter 2000, pp. 1–27.

17. Rationality properties of the cone of curves, unpublished manuscript.

18. (with C. Voica) Models of rationally connected manifolds, Journal

Math. Soc. Japan 55 (2003), 143–164.

19. (with D. Naie) Rationality properties of manifolds containing quasi-lines, Int. Journal Math. 14(2003), 1053–

1080.

20. Birational geometry of rationally connected manifolds via quasi-lines, in Projective varieties with unexpected

properties, Proceedings Siena 2004, de Gruyter, 2005, pp. 317–335.

21. (with F. Repetto) On a theorem of Van de Ven, Comm. Alg. 3(2008), 1480-1483.

22. (with M. Beltrametti) On manifolds swept out by high dimensional quadrics, Math. Zeit. 260 (2008), 229-234.

23. On manifolds of small degree, Comment. Math. Helv. 83(2008), 927-940.

24. (with F. Russo) Varieties with quadratic entry locus, II, Compositio Math. 144 (2008), 949-962.

25. (with M. Beltrametti) A view on extending morphisms from ample divisors, in Interactions of Classical and

Numerical Algebraic Geometry, 2008, Contemporary Math. vol. 496, AMS 2009, pp. 71-110.

26. (with F. Russo) Conic-connected manifolds, J. Reine Angew. Math.

644 (2010), 145–157.

27. (with F. Russo) Manifolds covered by lines and the Hartshorne Conjecture for quadratic manifolds, Amer. Jour. Math. 135 (2013) 349-360.

28. (with F. Russo) On dual defective manifolds, Math. Res. Lett. 21 (2014) 1137-1154.

29. Recognizing Pn in classical and modern setting, Comm. Alg. 44 (2016) 5088-5094.

30. (with F. Russo) Remarks on defective Fano manifolds, Ann. Univ. Ferrara 63 (2017) 133-146.

Ferrara, Febb. 2018